this is a hydro build, but since the roots havent gotten big enough to leave the net pot, im using a drip system to water it 5 times a day (spread out evenly every few hours). i have 2 24" flourescents and a 150w cfl. the ph of the water is about 6.5. the light cycle is 18/6, but the cycle got messed up couple times because the little timer "pin" wasnt in right and i lost a couple hours of light for a couple days before i discovered it. also, when the liitle girl wasnt growing very fast, i mistakingly added the full the dose of veg nutes to the water. i guess i was anxious. plus i think there was some stress because when i was building the grow box while she was a sproutling, the net pot with the hydroton and little sproutling got jostled a couple times. so... from the forums ive read, it sounds like it could be the nute shock i gave it, overwatering, underwating, the jostling shock... im not sure... i hope that the picture will help you guys.. thanks!!!