Robertsanswered grow question 2 years ago With a fresh transplant you won't need much feed. The dark green says it's strong already. The burn edges is from overwatering, and likely ph change in substrate with new stuff. Which also has a potassium deficiency sign as well started. So I am really leaning on your ph in soil and the changes it is experiencing. Rapid change in soil ph hurts them. .1 ph in change is a big difference for them. They can only tolerate so much. Is why they say to water good on transplant. Plus If you use more course perlite it will make the plants resistance to overwatering much better. Roots like air as well as nutrients, and water.