First grow with bag seed went great. So I ordered, recieved and germed 10 feminized WW from A.M.S. There at the end of there 2nd week of veg. and are growing nicely, however, at the end of the daily light cycle 18/6 they become very droopy. After the 6 hours of dark there back to being perky. The light cycle is from 3p.m. to 9a.m. so usually the last time I see them is at 11p.m. and they look great, all fan leaves are perked up and all plants seem happy. So somewhere between 11p.m. and 6a.m. they droop (badly). The bag seed from the first grow did not do this. Whats the problem, Please help. My set-up. 4x4 tray eeb and flow 1000w air cooled 24" above plants 6" rockwool 1/4" cocotek mat hydroton rock GH 3 part expert formula 1440ppm @.7 res. temp. 68 ph 5.8 to 6.1 temp at plant level 72 feed 1x 7min 15min total fill to drain at 3p.m. when the light turns on