Easy enough, thank you. On to reservoir changes. I’ve seen people changing their solution out every 3,5,7,10 days. Also some that only top them off, which seems problematic to me. I’m thinking every 7 days which will make it easier to keep with the feed schedule. Assuming pH doesn’t go crazy… How often are you guys changing yours? And… Read more

Rockwool has a neutral pH of 7. Roots in an inert media prefer a pH of 5.5-6. Soak the rockwool in a 5.5 pH solution for a few hours before use.

Until a few days before harvest. You want the plant to pull out as much moisture from the pot as possible before harvest. Don’t water and harvest the same day because of guttation risks. Guttation sap can cause mold in buds.

I don’t have access to clones right now so I will be starting from seed. I guess the plan will be to germinate in paper towels and stick it in the rock wool. Should I soak the rock wool in anything other than water?