What does the Aqua Master P700 Pro 2 measure, and where can I use it?
The P700 Pro 2 measures pH, EC, CF, PPM (700 scale), and temperature in liquids. It's ideal for hydroponic reservoirs, aquariums, ponds, and nutrient tanks. It doesn’t measure dissolved oxygen or ORP. Regular use helps prevent issues like nutrient lockout by keeping pH and EC in range.
Is the Aqua Master P700 Pro 2 designed for continuous monitoring?
Yes—the P700 Pro 2 is built for 24/7 monitoring. Its large display shows all readings at once. You can leave the probes in the tank as long as they’re kept clean and properly maintained.
What’s the difference between EC, CF, and PPM on this meter?
EC is the direct conductivity reading. CF is another unit (EC x 10), and PPM is a calculated value based on the 700 scale. Use EC for consistent comparisons—PPM varies across brands.
What are the measurement ranges and accuracy of the P700 Pro 2?
The meter reads pH (0.0–14.0 ±0.1), EC (0.0–19.9 mS/cm ±2%), CF (0–199), PPM (0–1999 on 700 scale), and temperature (0–50°C ±0.5°C). It includes automatic temperature compensation for more stable readings.
How do I calibrate the Aqua Master P700 Pro 2?
Use pH 7.0 first, then pH 4.0 for 2-point pH calibration. For EC, calibrate with 1413, 3.0, or 12.88 EC solution—choose the one closest to your typical nutrient strength. The unit includes a calibration reminder.
What’s the best way to handle calibration solutions?
Don’t reuse or dip into bottles. Always pour fresh calibration liquid into a clean cup, rinse the probes between steps, and discard used solution. Most calibration problems come from dirty sensors or bad solution handling.
Are the Aqua Master P700 Pro 2 probes replaceable?
Yes—the pH and EC electrodes are replaceable. If readings won’t stabilise, fail to calibrate, or remain off even after cleaning, it's probably time to replace the affected probe.
How should I clean and store the probes?
Rinse after each use. Store the pH probe in KCl storage solution (never water or dry). EC probes don’t need storage solution—just keep them clean. Use proper probe cleaner when needed and recalibrate after cleaning.
Why are my readings drifting or acting weird?
Common causes include dirty probes, air bubbles, old calibration solution, or extreme temperature swings. After replacing probes, clean, calibrate, and give them time to settle. For a quick check, test in fresh pH 7 and EC 1413 solutions.
What’s the correct way to use the P700 Pro 2 during mixing?
Fully mix your solution first. Test and adjust EC, then adjust pH last. Avoid placing probes near air stones or dosing inlets—bubbles and concentrates can affect readings. Rinse after measuring runoff or dirty water.
What kind of power does the Aqua Master P700 Pro 2 use?
It includes a built-in rechargeable battery and runs on a DC 6V power supply. You can use it while charging. A battery indicator shows when it's time to recharge.
Is the Aqua Master P700 Pro 2 waterproof?
The meter body is IP65 (splash-proof), and the probes are IP67 (safe for wet use and brief submersion). Don’t fully submerge the meter body—it’s splash-resistant, not waterproof.
Do organic nutrients affect probe maintenance?
Yes—organics and bio-additives can coat sensors faster. If you're using living nutrients or compost teas, plan on more frequent probe cleaning and calibration checks.
What’s the simplest best-practice routine for this meter?
Rinse probes after use, calibrate pH (7 & 4) and EC (1.4/3.0/12.88) monthly, store the pH probe in KCl, and keep probes in clean, well-mixed solution away from bubbles or dosing spikes.
What are the most common mistakes users make?
Letting the pH probe dry out, reusing contaminated calibration solution, skipping regular cleaning, or trusting ppm numbers without understanding the 700 scale are top offenders.
