Question 1

How much pH Down is needed per gallon?

Accepted Answer

Dosages vary by starting alkalinity. RO water requires only a few drops of acid, while hard tap water with high carbonate buffers needs significantly more mL to drop pH.

Question 2

What is Cal-Mag water buffering?

Accepted Answer

Adding Cal-Mag to pure RO or distilled water raises base minerals to a safe starting range (0.3–0.4 EC) before adding primary fertilizers, preventing calcium leaf spots.