T3rMiNaToR3

I water with either 50% distilled and 50% rain OR 50% distilled and 50% tap. I have fed once with Grow Big and it happened right after that. Might have rubbed the nozzle on the underside of the leaves. I water every 2-3 days and water until drop of runoff appears in tray. How much runoff do I want to have? 🙏