Well not burning your house down is a basic rule in growing.

Stinky is the soil wizard here.....she's the one that taught me that you should have a gallon of soil per foot of stem......and yes I do think that this your problem and a transplant into larger containers will help.....if not solve....the issue.

Plants need root room.......and if your roots aint happy your plant aint happy......it's easy to forget them since they aren't what you look at in a plant but believe me they are the MOST important of all.

Treat them nicely.
Weedhound Reviewed by Weedhound on . First time, having problems Here is my situation: Closet setup, am using a HID florescent ballast for the growth phase then will switch to a HPS bulb for flowering. I have been running the florescent setup 24/7 for a little more than a month now. Plants are beginning to reach a foot tall. Started the seeds directly in standard "kegger" red cups which i cut holes in the bottom for drainage. I will be transplanting to a 6" pot once the plants start to show gender. (will also switch to HPS 12/12 at this point) Rating: 5