I'm going to say your PH is off and possible nute burn from the nutes that are getting in to the plants. You may be pulling enough nutes through the plant to keep it alive but it looks like you're not getting the nutes needed for flowers to produce. This is just my opinion. Adjusted PH is very important for nute uptake. Your plants may be starving for their flowering nutes. And keep the lights as close as possible. I keep mine within an inch or two from the plants and have no problems. I also try to get more light in to the center of the plant from top to bottom with CFL's.:thumbsup: