Looks like it might be a Nitrogen deficiency.
You have a lot of extra floor space on the flower side, I would look for some pots that are short and wide. Maybe those rectangular window type boxes might work? They're usually 14-18" long?
As for heat, you might need to add an additional fan, or even just a passive vent on top to allow heat to escape. I had a lot of trouble with heat with CFLs too, even when I was growing in a 7' tall closet, temps still hit 90 for me.
You have a lot of extra floor space on the flower side, I would look for some pots that are short and wide. Maybe those rectangular window type boxes might work? They're usually 14-18" long?
As for heat, you might need to add an additional fan, or even just a passive vent on top to allow heat to escape. I had a lot of trouble with heat with CFLs too, even when I was growing in a 7' tall closet, temps still hit 90 for me.