ok I'm really confused now. Calmag I can see, thats used during entire grow if needed. Big Bloom on a seedling? <confused
Calmag yes if needed. That rooting concentrate would be a great thing until it is about 4-5 nodes tall. I believe that organic fertilizer is what yer looking fer atm maybe mixed with the BB? I'll do a read on Big Bloom since I've never used it.