imho,back lights off 4inches.take another cup same size as the one ur grow in,same mix,fill cup,weigh its dry weight,wen cup ur growin weighsthat amont water.thats a standard amont of water for a plant that age in that size pot.folded up leafs sounds lik heat.also wen u put them out side u harden them off by puting them outside for a 1/2 hr,each day increase the expsposure by a 1/2 hr each day. peace buthead/