HM TDS Meter 120 x 60 x 120 The system blocks light and

The system blocks light and keeps the top of your medium moist for a more even dry down

phosphorus and potassium) ratio

And using formulas which are not only highly advanced and easily customizable

Stop mould before it even enters your room with Phresh Intake Filters

Combine this with the crop protection provided by:

HM TDS Meter 120 x 60 x 120 The system blocks light andUsage Tips: Turn on the switch and then place the electrode into the testing solution (Remarks: the height of the testing solution is less than 2 cm). Use the meter to stir the testing solution for a while and then press the HOLD button and take it out of the solution to read after numerically stable for 2 6 seconds. After reading, turn off the meter, and then wipe and clean the electrode with pure water before sleeving it. Factory Calibrated. If