The Bluelabs BLU27100 is an incredibly accurate continuous ph Monitoring device. It gives real-time temperature, pH and EC readings. The monitor comes with a large, easy-to-read LED display. Calibration is quick and easy. Much like the Blue Labs pH monitor it is a reliable lab grade device.
- Monitor pH up and down, temperature, nutrient (TDS) level in water to maximize your grow and ensure plants get a balanced feed; General uses includes growing tent and reservoir; Selectable conductivity units include TDS, EC, ppm 500, ppm 700 and CF
- This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; High and low alarm when outside parameters, selectable units include TDS, EC, ppm 500, ppm 700 and CF
- Lab quality glass pH probe with easy two point calibration; Conductivity / temperature probe comes factory calibrated so it's ready to be used; Double junction probe is more accurate than test strips and drops
- Combine with Bluelab pen and meter for full garden nutrients monitoring in water and soil; Other features: International power supply, water resistant design; KIT INCLUDES: Calibration solution, EC probe and pH probe, probe care kit is sold separately
- Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 2-Year Limited Warranty with proof of purchase (6-month warranty for pH probe)
pH is crucial for proper nutrient absorption. For DWC your pH needs to remain between 5.5 and 6.5. I like to mix freshwater batches to pH 5.5 because the trend I have noticed is pH rises as plants absorb nutrients. The plants and roots seem happiest with a low pH.
An EC meter measures Electrical Conductivity to give you a rough measure of the nutrients in your solution. It is only a rough measure because pH up, pH down, minerals from your tap water and minerals the plants deposit into the water will all increase EC. You can get away with not using an EC meter but they make it much easier to top off your water rather than having to do complete water changes each time.
Baseline EC level – When using the chart above remember to subtract the baseline EC level. For example:
Tap water EC = 150
Measured EC = 1550
Actual EC = 1400
PPM is inferred by EC. The general conversion is:
EC * 2 = PPM
Temperature – Monitor your hydroponic temperature to ensure it stays under 70F (ideally under 68F).
Continuous pH Monitoring Chart:
Maintenance
Like with all continuous pH monitoring systems it is important to not let the electrode dry out. Use the included cover on the probe when it is not submerged in solution. Store wet (ideally with a slightly acidic solution) and do not let it dry out.
