Besides the fact that your drowning them, the soil youre using isnt really good for cannabis. Its not because of the temperature because cannabis grows in locations that have temps that exceed 90degrees F...It could be the lights. Youre the second person ive seen post using the 125W GrowLight from homedepot. Both of you are having problems, similar problems too. Maybe you should switch to compact flouros? U can get those at homedepot for like $10...

Ive grown some really good buds from CF lights..In my opinion they are the most efficient lights for personal use indoor growers that need to hide it from people. You want two CFs per plant. You can use these lights throughout the whole life cycle. Now of course they arent the best lights and yea, if you have more money you can buy a nice MH or HPS setup. But due to the fact that you have to keep it hidden, MH and HPS lights arent a good idea. Mainly because they emmit more heat than your 125W growlight, garenteed..So needless to say youll need MORE ventilation and shit.

But if i were you i would try switching the soil and cut down on the water big time first. Then just see if it pulls through. If not, then ya gotta start over and you can try a different light and soil.