help sos asap messed up

Hey all! I have done a few successful grows with cmh and hps. I decided to have a go with LED and purchased tge Lumatek 300w for veg in 1m x1m tent. Its 28" above seedlings on 40%. Am I way off? Anyway 3 have stretched and 2 are short. All dodgy colour and not looking good. I know its a...

First time grower, had 1 plant (keep in makeshift box with light) that I believe was starting to flower. Plant was doing awesome. Decided to switch fluorescent bulb for heat bulb BC plant was getting bigger. An hour went by with heat bulb as I did some research to see if it was male or female...