Have you been using a chiller mate? I've had no issues with root rot, and I haven't changed the rez out yet. Week 2 of flower now. Not saying it works, but my ph never moves. Like neverNanook of the north wrote:well just to confirm its a piece of shit and does 0 imho.
I am now showing signs of root rot when it claimed no need for h2o2.... and the ph is just the same as if left unattended.
SNAKE OIL!!!!!
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