Oh my setup is poor , lights 2 cfls , 25w ,2700k, 1430 lumens. 2x pc fans , inside temperature 24* CThey look a bit weak.
What's your setup like?
No nutrients 100% natural grow in cardboard growbox. 1more light will be good? im growing in universal substratum and peeble covers only about 2cm heightIs this a closet grow?
You're gonna need more light. If you're in a tight space and can't put an MH or HPS in there, then throw in some more cfls.
Using any nutrients? You growing in straight clay pebbles?