So i have a 4 x 4 tent with 8 plants and a 400w light...i seem to either over watering or under watering. One plant is greener than the other and the greener of the 2 droop down but the leaves are strait. But after watering and trasplant today the droopy plant seems to be getting better and the heathier one is taking its place. Both are 20 days old and i do a 20/4 lighting. These are also an autoflower. I have 6 mpre on seeding stage. Any pointers!?