pH Control

The Cannabis Grow Bible

by Greg Green

ph chart

It is always good to check the pH at least once every week for plants that grow in soil. It is also good to check the soils pH a day or two after you feed your plant. A pH test kit can be purchased in most grow shops. The electronic test kits can be a bit expensive though. If you find that your soil’s pH has shifted out of the 6 – 8 range you may want to try and bring the pH back to 7. Again, below 7 is acidic and above 7 is alkaline. There are two ways to do adjust the ph of the soil. The first is called a soil flush and is not recommended but may be needed under certain circumstances such as serious pH fluctuations and chemical burns.

Cannabis Grow Bible

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