G.A.S. Intelligent Humidity / VPD Controller for SonicAir Pro Humidifier Bulky Use the Budget pH Tester

Use the Budget pH Tester to check pH levels once a day (and whenever you add any feed) and you'll ensure that this is never an issue

PMT works best as a preventative measure

There are 4 basic modes of operation which are as follows:

Ionic Hydro Grow is really simple to use but still produces very pleasing results

Adjust pH: Use a reliable pH meter (like the Essentials pH Meter) to set your solution to pH 5

G.A.S. Intelligent Humidity / VPD Controller for SonicAir Pro Humidifier Bulky Use the Budget pH TesterControl the Humidity & VPD in Your Grow Room for Optimum Plant Growth Please note, this is only compatible with the SonicAir Pro Humidifier The GAS Intelligent Humidity Controller takes care of the humidity levels in your grow room, for faster growth rates and happier plants. Air temperature and humidity are the two factors that affect something called Vapour Pressure Deficit (VPD), which is literally the "drying" ability of the air. For plants to