Even with a seedling starting mix I would personally flush it first.
You can put your plants into a coma with superthrive but since it is not a fertilizer per se, but simply a vitamin B supplement, it's not going to burn them the way overferting would.
If you were a comfortable hydro grower why don't ou consider using coco?
stinkyattic Reviewed by stinkyattic on . Burnt leaves - suggestions please Hi - Trying to start my second grow, and seem to be having difficulty getting this one to take root. This is my second attempt at my second grow, and I seem to be having similar problems - burnt leaves. My first grow, I went hydro. The results from that grow were disappointing, but I didn't have any major problems with the actual growing. This time, I'm trying soil, because I thought it would be easier for maintaining a mother plant. Well, I've tried two different soils, both meant Rating: 5