u/Affectionate-Sky-751

I’m new to hydroponics and have an air cube system. I’m using g rock wool for a medium and water 1x daily for an hour. Water temp is 73f and it has 114ppm tds and ph6.14. I’m using 0.7-1-2 root additive. Is there anything I should know?

Does this look better? Had so many fun replies

Clones about 2 months old. Has roots. But leaves are turning brown. I thought it was lack of potassium and I fed them with lotus grow and now it’s worse. Now I think it is ph so I put some baking soda In the water a few minutes ago.