Second Timing Growing , got a few ?s still

Just transplanted my Clones Into 5gal from 1gal been vegging for 23 days now

FFOF
Got Clone 3/12 planted 3/13

55 gallon Drum
GH Flora Nova Grow -2 cups
GH Cal Mag 100ml
PH Down - 50ml

P.H 6.0 when feed



Any advice or constructive criticism would be appreciated !

Gonna be hella crowded in there.

Yeah it is but want to make sure everything is good