Originally Posted by shambhalove.
Yes, do not trust your test kit unless youve calibrated it.
KH2PO4 is mono potassium phosphate, it gives the plants P and more K. I didnt realize you were already dosing both.
Theres no quick answer for that haha. Google macro and micro nutrients for plants and start there.
I hadn't even though of doing that. I'll look that up along with macro and micro nutrients. Thanks