I have three Barney's Farm Pineapple Chunk and one White Widow growing under 668 actual watts from fluorescent tubes and CFL's. There are about 48,000 lumens on these plants in a six foot grow room. I plant on letting them veg for a month and a half before switching to the flower light cycle. As for nutrients I have about five worms in every pot producing castings, and have nutes high in nitrogen for veg and nutes high in phosphorus for flower (I don't remember which brand or the name but can check if necessary) I also have been mixing sucanat in the water as I read it can increase yield by as much as twenty percent. Thus far the plants are all about four inches - it has been a week and a half. Could anyone give me a vague estimate of the yield for the white widow and the pineapple chunk based off of this alone? It would be greatly appreciated. Thanks in advance.