#suggestions

I just trasplanted clones i cut from a GG#4 at week 1 or 2 of flower. Whats good temp for them starting and through out? And about the light. i have it up now high till i see them stretching for light then ill lower. Am i right ? Also humidity should be around 70? Tips and help would be appreciated.

First time grower, auto on 24/7 atm. Not sure about some of the leaves... Thinking it might be magnese deficiency but not sure. help