dude thats far too much light for sprouts, i suggest florescent or cfl for seedlings or clones. Also, your pots are too large to for the young sprouts to keep up with. There probably getting over-watered and supplied with too much nutrients, this causes more harm than good for the plants. Start of with some 4-inch pots for the first few weeks and then transport them into 2-3 gallon pots when the bottom round leaves fall off.