Aquaculture water quality analyzer

Introduction

An aquaculture water quality analyzer is an instrument used to measure the water quality parameters that are important for the aquaculture, such as the dissolved oxygen, the pH, the temperature, the ammonia nitrogen, the nitrite, the salinity, and the turbidity, and it is used in the aquaculture, the fishery, and the water quality management for the monitoring and the management of the aquaculture water. The aquaculture water quality analyzer consists of the multiple sensors or the test systems, a signal processing circuit, a display, and the battery, and it measures the parameters, with the automatic temperature compensation, and it displays the values, with features such as the multi-parameter measurement, the data logging, and the calibration; the aquaculture water quality analyzer is used for the monitoring of the dissolved oxygen in the ponds and the tanks, for the monitoring of the pH and the temperature, for the monitoring of the ammonia and the nitrite, for the assessment of the water quality for the aquatic life, for the management of the aeration and the feeding, for the prevention of the disease, and for many other applications, and it is available as the handheld, the portable, and the online analyzers; the aquaculture water quality analyzer is an essential instrument for the aquaculture management. Aquaculture water quality analyzers are used in the fish farms, in the shrimp farms, in the hatcheries, in the ornamental fish, and for many other applications. With their water quality monitoring, aquaculture water quality analyzers are essential for the aquaculture management.

Portable Aquaculture Water Quality Analyzer LAWQA-T2010

Portable Aquaculture Water Quality Analyzer is designed for easy transport and convenient on-site measurements. Offers a pH measurement range within 5.00 to 8.00pH with ±0.1 pH accuracy...

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Aquaculture Water Quality Analyzer LAWQA-T2011

Aquaculture Water Quality Analyzer provides a pH measuring range within 0.00 to 14.00pH. Along with pH, it measures nearly a hundred parameters with excellent optical stability and absor...

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Aquaculture Water Quality Analyzer LAWQA-T2010

Aquaculture Water Quality Analyzer detects concentration, absorbance and transmittance of multiple parameters in liquid. It provides a dissolved oxygen and ammonia nitrogen measuring ran...

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Standards

ISO 8245:1999-Water quality-Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)

ISO 7393-2:2017-Water quality-Determination of free chlorine and total chlorine-Colorimetric method using N,N-diethyl-1,4-phenylenediamine (DPD)

ISO 11923:1997-Water quality-Determination of suspended solids by filtration through glass-fibre filters

ASTM D4189-23-Standard Test Method for Silt Density Index (SDI) of Water

Complies with the above standards, but is not limited to them.

Features

1. Aquaculture water quality analyzer for monitoring key parameters in fish/shrimp farming and aquatic systems.

2. Multi-parameter meter measuring dissolved oxygen, pH, temperature, ammonia, nitrite, nitrate and salinity in water.

3. Suitable for fish farms, shrimp ponds, hatcheries, aquaponics, aquariums, research and water quality management.

4. Includes analyzer body, sensors/probes, calibration solutions, sampling accessories, and operation manual.

5. Supports real-time or lab measurement of water quality parameters critical for aquatic animal health and growth.

FAQ

Q1: What testing scenarios is this analyzer mainly applied to?

A: The aquaculture water quality analyzer is used in fish farms, shrimp ponds, hatcheries, aquaponics systems, aquariums, ornamental fish, research facilities, and water quality management to measure key water quality parameters that directly affect aquatic animal health, growth, survival, and feed efficiency, helping farmers maintain optimal conditions, prevent disease outbreaks, and optimize production. It supports pond water monitoring (fish ponds (tilapia, carp, catfish, salmon, trout), shrimp ponds (whiteleg shrimp, tiger shrimp - very sensitive to water quality), daily monitoring (early morning (lowest DO before sunrise), afternoon; parameters: dissolved oxygen (DO - critical, >5 mg/L for most fish, >4 for shrimp; early morning DO crash is major killer), pH (6.5-9.0 optimal; affects ammonia toxicity and animal stress), temperature (affects metabolism, DO solubility, disease susceptibility), ammonia (NH3/NH4+ - toxic unionized NH3; <0.02 mg/L for fish, <0.05 for shrimp; pH and temp affect NH3 fraction), nitrite (NO2- - toxic, causes brown blood disease in fish, <0.1 mg/L), nitrate (NO3- - less toxic, but high levels indicate pollution; <50 mg/L), salinity (for brackish/marine species - specific gravity/conductivity), alkalinity (buffering capacity, >20 mg/L CaCO3), turbidity/suspended solids (affects light penetration, gill irritation), hydrogen sulfide (H2S - toxic, from anaerobic sediment; <0.003 mg/L), CO2 (high CO2 reduces oxygen uptake; <20 mg/L)), hatchery and larviculture (very sensitive life stages - strict parameter control, frequent monitoring (multiple times/day), recirculating aquaculture systems (RAS) - intensive, closed systems with biofiltration; monitor nitrification cycle (ammonia -> nitrite -> nitrate), DO, pH, alkalinity (biofilter consumes alkalinity), aquaponics (fish + plants - monitor ammonia (fish waste), nitrite, nitrate (plant nutrient), pH (compromise between fish (6.5-9) and plants (5.5-7.5)), DO, temperature), aquarium and ornamental (public aquariums, pet fish, coral reef tanks - monitor stability, water changes, livestock health), and research/aquatic ecology (experimental systems, water quality research, environmental monitoring of natural waters). Multi-parameter analyzers may be handheld/portable (for pond sampling) or benchtop (lab accuracy), with sensors for DO (electrochemical or optical), pH (glass electrode), temperature (thermistor), ammonia (ISE or colorimetric), nitrite/nitrate (colorimetric or ISE), salinity (conductivity). Some are single-parameter (e.g., DO meter) or multi-parameter (combo).

Q2: What standards does the analyzer comply with?

A: The aquaculture water quality analyzer follows relevant ISO, ASTM, EPA, FAO and GB/T standards including ISO 5814 (water quality - determination of dissolved oxygen - electrochemical probe method), ISO 10523 (water quality - determination of pH), ISO 6777 (water quality - determination of nitrite - molecular absorption spectrometry), ISO 6768 (water quality - determination of nitrogen), ISO 7875 (water quality - determination of surfactants), ISO 5813 (water quality - determination of dissolved oxygen - iodometric method (Winkler)), ASTM D888 (standard test methods for dissolved oxygen in water), ASTM D1293 (pH of water), ASTM D1426 (ammonia nitrogen in water), ASTM D3867 (nitrite/nitrate in water), EPA Methods (150.1 (ammonia), 350.1/353.2 (nitrite/nitrate), 400-F series), FAO (Food and Agriculture Organization) aquaculture water quality guidelines, and GB/T standards for water quality (pH, DO, ammonia, nitrite). The hardware complies with applicable analytical instrument standards and EMC (IEC 61326), IP rating (for portable/field use - IP67 common). Calibration uses certified calibration solutions/buffers (pH 4.01, 7.00, 10.01; DO zero (sodium sulfite) and saturation (air-saturated water); ammonia/nitrite/nitrate standards traceable to national standards). For aquaculture, follow FAO guidelines and best management practices (BMPs); for commercial farms, may follow ASC (Aquaculture Stewardship Council), BAP (Best Aquaculture Practices), or organic certification standards. For regulated discharge (farm effluent), follow national wastewater standards.

Q3: What is the warranty period for the whole analyzer and key components?

A: The whole aquaculture water quality analyzer is covered by a 12-24 month warranty (analytical/field instruments often 2 years). The meter body, electronics, display, and temperature sensor are covered, while pH electrode (wear part - glass bulb fragile, reference junction clogs; lifespan 6-18 months in aquaculture (high organic, biofouling); replaceable), DO sensor (electrochemical: membrane/electrolyte wears 6-12 months; optical: lumiphore degrades 2-5 years), ammonia/nitrate ISE electrodes (wear, ion-exchange membrane degrades 6-12 months), calibration solutions (consumable - expire), and batteries (portable) are consumables/accessories. Damage from improper use, electrode breakage (pH glass bulb - fragile, do not drop/scrape), sensor fouling (biofilm, algae, sediment on DO/pH membrane - clean regularly; aquaculture water is high-fouling), dry storage of pH/DO electrodes (must store wet per manufacturer), using wrong calibration, liquid ingress (if not IP-rated), dropping (portable), or unauthorized repair is excluded. Extended warranty and service contracts (calibration, sensor replacement) may be available. Electronics last 5-10 years; electrodes/sensors need periodic replacement (6-18 months in aquaculture due to fouling/wear).

Q4: Is this device difficult to operate? Is professional training required?

A: Operation is straightforward for basic measurement (calibrate, dip probe, read). No professional training required for routine use, but proper calibration and sensor maintenance are critical for accuracy (aquaculture water is challenging - high organic, fouling, temperature variation). We provide operation manuals. Proper setup (insert batteries (portable) or connect power (benchtop), turn on, allow warm-up (15-30 min for pH/DO stabilization), connect sensors (pH, DO, temperature, conductivity; ensure probes are properly connected, not damaged), prepare calibration solutions (pH buffers (4.01, 7.00, 10.01 - at measurement temperature; use fresh buffers, do not reuse), DO zero solution (sodium sulfite or zero-oxygen water) and air-saturated water (or air calibration), ammonia/nitrite/nitrate standards (for colorimetric or ISE), calibration (pH: 2-3 point calibration (7.00 then 4.01 and/or 10.01); rinse electrode with DI water between buffers, blot dry (do not rub); calibrate at measurement temperature (pH varies with temp; use ATC), DO: air calibration (hold probe in air with water-saturated atmosphere (wet sponge in calibration chamber) or air-saturated water; enter altitude/barometric pressure for correction; or zero calibration (sodium sulfite solution) for high accuracy; optical DO: air calibration only (no zero needed typically), conductivity/salinity: calibrate with KCl standard (e.g., 1413 microS/cm) or specific salinity standard, ISE (ammonia/nitrate): calibrate with 2-3 standards (low/mid/high), colorimetric: zero with blank, calibrate with standards), sample measurement (collect water sample (representative - at pond edge, 10-30 cm depth, avoid sediment; for DO: measure ON-SITE immediately (DO changes with temperature, agitation, time; do not transport sample for DO - use portable meter in field), rinse probe with sample water (to avoid buffer carryover), immerse probes in sample (ensure fully submerged, no air bubbles on membrane/bulb; for DO: gently stir or wait for equilibrium (30-60 sec); avoid stirring too fast (artificially increases DO), for pH: wait for stable reading (30-60 sec), record all parameters (DO (mg/L or % saturation), pH, temperature (degrees C), ammonia (mg/L NH3-N or total ammonia), nitrite (mg/L NO2-N), nitrate (mg/L NO3-N), salinity (ppt or specific gravity), note time, location, pond ID, weather (early morning vs afternoon matters), for colorimetric tests (ammonia/nitrite): add reagent to sample, wait specified time, read in colorimeter/photometer (follow kit instructions exactly - time, reagent volume, mixing), post-measurement (rinse probes thoroughly with DI water (remove pond water, algae, sediment; aquaculture water fouls probes quickly), clean if fouled (pH: gentle wipe with soft tissue or soak in mild detergent/acid (0.1 M HCl) for mineral deposits; DO: clean membrane with soft brush, replace electrolyte/membrane if fouled/damaged; ISE: clean per manufacturer), store electrodes properly (pH: store in storage solution (3 M KCl) or pH 4 buffer; DO electrochemical: store with moist sponge or per manufacturer; optical DO: dry storage is OK; never let pH/DO electrodes dry out (permanent damage)), maintenance (daily: rinse probes after use, check calibration (single-point check with buffer), weekly: clean probes (especially if used in pond water - biofouling is major issue), inspect membranes/electrodes, monthly: full calibration (2-3 point), replace calibration solutions, electrode/sensor replacement (pH: 6-18 months (sooner if response slow, drifts, cannot calibrate); DO membrane: 6-12 months (or if readings unstable/low); optical DO lumiphore: 2-5 years; ISE: 6-12 months), troubleshooting (readings unstable/drifting (probe fouled (biofilm, algae - clean), electrode aging (replace), air bubbles on membrane (remove), temperature fluctuation, low battery - clean, replace electrode, remove bubbles, charge), DO readings too low (probe not equilibrated, membrane fouled/damaged, electrolyte depleted, calibration error, sample not representative (too deep, near sediment) - wait, clean/replace membrane, recalibrate, sample properly), DO readings too high (air bubbles on membrane, stirring too fast, calibration at wrong altitude, probe in sunlight (photosynthesis by algae produces O2) - remove bubbles, stir gently, enter altitude, shade probe), pH readings off (calibration expired, electrode clogged/dry, temperature compensation off, buffer contaminated - recalibrate, clean/replace electrode, enable ATC, use fresh buffer), ammonia/nitrite high (could be real (water quality problem!) but verify with fresh reagents, proper technique; check if test kit expired; cross-check with lab), meter not turning on (batteries dead, corrosion in compartment, power issue - replace batteries, clean contacts, service), and safety (WATER/ELECTRICAL (portable meter near water - do not immerse meter body (only probes), ensure IP rating for field use; do not use with wet hands on meter; battery-powered is safer than mains near water), CHEMICAL (calibration solutions (pH buffers, sodium sulfite (reducing agent, irritant), ammonia/nitrite reagents (some contain caustic or toxic components - wear PPE (gloves, goggles), follow SDS, dispose per regulations; colorimetric test kits may contain hazardous reagents), BIOLOGICAL (pond water may contain pathogens, algae toxins (cyanobacteria/blue-green algae can produce microcystin - avoid ingestion, wear gloves), parasites - wash hands after handling), ENVIRONMENT (do not discard calibration solutions into pond (contamination); dispose properly), SUNLIGHT/HEAT (do not leave meter in direct sun (overheats, damages display/electronics); carry in shade/case), handle pH electrode carefully (glass bulb breaks easily - use probe guard, do not touch bulb with fingers)) are important for accurate water quality monitoring.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Calibration recommended: pH - daily or before each use (single-point check with pH 7 buffer; full 2-3 point calibration weekly or when electrode is replaced/cleaned); DO - before each use (air calibration; full calibration with zero monthly or for high accuracy); conductivity/salinity - monthly or before critical use; ammonia/nitrite/nitrate (colorimetric/ISE) - per batch or with new reagent lot (use fresh standards). Full multi-point calibration every 1-3 months depending on use (aquaculture field use is harsh - more frequent). If meter is dropped, sensor replaced, cleaned, or readings seem off, recalibrate immediately. Routine verification: check with buffer/standard before each sampling session. For ISO 17025/commercial labs, follow applicable schedules and maintain records (calibration certificates, solution lot numbers, as-found/as-left data, sensor ID). Aquaculture water is high-fouling and variable - regular calibration and sensor maintenance are essential; many farmers calibrate daily (pH/DO) before morning rounds. For regulatory discharge monitoring, calibration frequency per method (EPA, ISO).

Q7: Are supporting consumables universal?

A: pH electrode (replacement - specific to meter model (BNC connector is somewhat universal, but proprietary connectors exist; use OEM or certified compatible), DO sensor (specific - electrochemical membrane/electrolyte kits are brand-specific; optical DO caps are brand-specific), calibration solutions (pH buffers, DO zero, conductivity standards, ammonia/nitrite/nitrate standards - universal from lab supply (Hanna, Hach, Oakton) but use certified traceable), colorimetric reagent kits (ammonia, nitrite, nitrate - specific to test method/meter (Hanna, API, Tetra, Salifert; use matching kit), batteries (standard AA/9V - universal), and cleaning supplies are available from aquaculture/lab supply companies, though sensors/electrodes are often meter-specific (use OEM or certified compatible to maintain accuracy and warranty). Long-term consumable cost is SIGNIFICANT in aquaculture (electrodes/sensors need replacement every 6-18 months due to fouling; calibration solutions and reagent kits are ongoing purchases) - factor into total cost.

Q8: Can I customize parameters or supporting accessories?

A: Customization includes parameters measured (single (DO only, pH only) or multi-parameter (DO + pH + temp + conductivity/salinity + ammonia + nitrite + nitrate + turbidity + ORP + chlorophyll + blue-green algae), DO sensor type (electrochemical (Clark-type, membrane/electrolyte - cheaper, more maintenance, affected by flow) or optical (luminescent - more robust, no electrolyte, less maintenance, no flow dependence, longer sensor life - recommended for aquaculture)), form factor (portable/handheld (field, pond-side - IP67, battery, rugged) or benchtop (lab, higher accuracy, more parameters)), data/connectivity (basic (display only) or advanced (data logging (1000+ points), USB/Bluetooth/WiFi export, GPS, smartphone app, cloud monitoring, alarms for out-of-range parameters, real-time monitoring (continuous in-pond sensors with wireless base station - for intensive RAS/ponds)), accessories (extra sensors/electrodes, calibration solutions kit, reagent kits (ammonia, nitrite, nitrate), carrying case (field), spare batteries, probe stand, sample cups, cleaning kit, calibration certificate, certifications (CE, FCC, ISO 9001, IP67), language and accessories. Additional sensors, reagents, and accessories can be ordered separately.

Q9: Does the purchase include on-site installation and commissioning service?

A: Standard delivery includes aquaculture water quality analyzer, sensors/probes, calibration solutions (initial), batteries, carrying case, and instruction manual. On-site installation is not required for portable meters (charge, calibrate, use). On-site training is not included for standard orders but can be arranged at additional cost (for farm technicians on calibration, sensor maintenance, parameter interpretation (what levels are optimal, how to respond to poor water quality), and record-keeping). Remote guidance provided. For continuous monitoring systems (in-pond sensors + base station): installation and setup recommended. Always calibrate before use.

Q10: What types of samples are compatible with this equipment?

A: The aquaculture water quality analyzer measures freshwater, brackish water, and saltwater including pond water (fish ponds, shrimp ponds, polyculture ponds - freshwater, brackish, marine), hatchery water (larval rearing tanks, broodstock tanks, nursery systems - very clean, controlled), RAS (recirculating aquaculture system water - high stocking, biofiltration, controlled), aquaponics water (fish tank + plant grow bed - nutrient-rich), aquarium water (freshwater, marine/reef, brackish - ornamental), natural water (lakes, rivers, reservoirs - source water for farms, environmental monitoring), and wastewater/effluent (farm discharge - for compliance monitoring). NOT compatible with: Highly turbid/muddy water without cleaning (fouls probes rapidly - rinse/clean frequently; may need filtration for colorimetric tests), samples with high oil/grease (coats DO/pH membranes - clean thoroughly; may damage sensors), very acidic/alkaline water beyond sensor range (pH <2 or >12 may damage pH electrode - verify range), samples with high sulfide (H2S - can poison DO sensors and ISE electrodes; use in well-aerated water or specific sensors), and samples requiring parameters not available on the meter (e.g., heavy metals, pesticides - need different instrumentation (ICP, HPLC)). For colorimetric tests: samples must be filtered if turbid (turbidity interferes with absorbance), and reagent kits have specific ranges (dilute if out of range). IMPORTANT: Aquaculture water quality analyzer fundamentals: (1) Key parameters and optimal ranges: - Dissolved Oxygen (DO): Most critical. Fish: >5 mg/L (warm water), >6 for salmonids; shrimp: >4 mg/L. Early morning (before sunrise) is lowest (respiration all night, no photosynthesis). DO <2-3 mg/L = stress/death. DO affected by temperature (colder water holds more O2), salinity (saltwater holds less), altitude, photosynthesis (algae/plants produce O2 during day, consume at night), waste (BOD). - pH: Optimal 6.5-9.0 for most fish/shrimp. pH <6.5 = acid stress, affects gills; pH >9.0 = ammonia more toxic. Diurnal swing (photosynthesis consumes CO2 -> pH rises during day, respiration produces CO2 -> pH drops at night). Large swings (>1.5) = stress. - Temperature: Affects metabolism (Q10 effect: +10 degrees C = ~2x metabolism), DO solubility (warm water less O2), disease (stress = immunosuppression), growth. Species-specific (trout: 10-18 degrees C; tilapia: 22-30; shrimp: 26-32). - Ammonia (NH3/NH4+): Total ammonia = unionized (NH3, toxic) + ionized (NH4+, less toxic). NH3 fraction increases with pH and temperature. At pH 8.5, 25 degrees C: ~15% of total is NH3. Safe: <0.02 mg/L NH3 for fish, <0.05 for shrimp. Ammonia from fish excretion, uneaten feed, decomposition. - Nitrite (NO2-): Intermediate in nitrification (ammonia -> nitrite -> nitrate by bacteria). Toxic: binds hemoglobin (fish) -> brown blood disease (methemoglobin), reduces O2 transport. Safe: <0.1 mg/L for fish, <0.05 for shrimp. High nitrite = biofilter immature/overloaded. - Nitrate (NO3-): End product of nitrification. Less toxic, but high (>50-100 mg/L) = stress, poor growth, indicates system overload. In aquaponics, nitrate is plant nutrient (target 20-100 mg/L). - Salinity: For brackish/marine species. Shrimp postlarvae: 10-25 ppt; marine fish: 30-35 ppt. Specific gravity or conductivity measurement. - Alkalinity: Buffering capacity (HCO3-, CO3--). >20 mg/L CaCO3 for stability; low alkalinity = pH swings. Biofiltration consumes alkalinity (add bicarbonate in RAS). - Turbidity/Suspended Solids: Clay, algae, waste. High turbidity = gill irritation, reduced light (less photosynthesis), stress. - H2S (hydrogen sulfide): From anaerobic sediment (black, rotten egg smell). Very toxic (<0.003 mg/L). Indicates poor sediment management, low DO. - CO2: <20 mg/L; high CO2 (from respiration, low aeration) reduces O2 uptake, causes acidosis. (2) Measurement methods: - DO: Electrochemical (Clark electrode: gold cathode, silver anode, electrolyte, membrane; consumes O2, needs flow; maintenance: membrane/electrolyte). Optical (luminescent: blue light excites lumiphore, red light emission quenched by O2; no electrolyte, no flow dependence, low maintenance; recommended for aquaculture). - pH: Glass electrode (H+ selective) + reference. Fragile, needs wet storage, regular calibration. - Ammonia: ISE (ion-selective electrode, measures NH4+ or NH3 gas) or colorimetric (Nessler, salicylate-hypochlorite - blue color, measure absorbance). - Nitrite: Colorimetric (diazotization - pink/red color, Griess reagent). - Nitrate: Colorimetric (cadmium reduction to nitrite, then Griess; or enzymatic). - Salinity: Conductivity (ions conduct electricity; convert to salinity) or refractometer/hydrometer (separate tools). (3) Monitoring schedule: - Intensive ponds/RAS: DO 2-4x/day (especially pre-dawn), pH 1-2x/day, ammonia/nitrite 1-2x/week (or daily in critical periods), temperature continuous. - Extensive ponds: DO daily (pre-dawn), pH 2-3x/week, ammonia/nitrite weekly. - Hatchery: All parameters multiple times/day (larvae very sensitive). - After water exchange, feeding change, weather event (rain, hot spell): test more frequently. (4) Common errors: - Not calibrating (biggest error - pH/DO drift; calibrate before each use). - Transporting DO sample (DO changes - measure on-site immediately). - Probe fouling (aquaculture water = algae, biofilm, sediment - clean after each use; fouling = low/unstable DO, slow pH). - Not storing electrodes wet (pH/DO electrochemical dry out = permanent damage). - Ignoring temperature (DO solubility, pH, ammonia toxicity all temp-dependent; use ATC, report temp). - Only testing afternoon (DO is highest then; pre-dawn is critical - test early morning). - Using expired/contaminated reagents (colorimetric tests - wrong results). - Interpreting total ammonia without pH/temp (must calculate unionized NH3 fraction). - Not rinsing probe between samples/calibration (carryover error). (5) Responding to poor water quality: - Low DO: Aerate (paddlewheel, diffusers), reduce feeding, exchange water, check for algal crash. - High ammonia/nitrite: Reduce feeding, increase aeration, add biofiltration/bacteria, water exchange, add salt (for nitrite toxicity in fish - chloride competes), check pH (lower pH reduces NH3). - pH swing: Add alkalinity (liming, bicarbonate), reduce overfeeding, manage algae. - High turbidity: Reduce feeding, sediment management, water exchange, alum/gypsum (clay flocculation). (6) Choosing the right analyzer: - Basic farm: Portable DO + pH + temp meter (most critical, affordable). - Shrimp/intensive: Add ammonia, nitrite, salinity (colorimetric test kits or multi-parameter ISE). - RAS/hatchery: Multi-parameter with data logging, continuous monitoring, alarms. - Research: Benchtop high-accuracy, lab-grade, all parameters.