Probably shouldnt need nutrients yet dude, those pots look quite big and full of them. 100watt heat light sounds like it is for warming things not growing with. As for how much light for that bigger plant id say 150watt to 250watt minimun for a good yeild but its got a way to go before this happens.
Sour diesel is a good strain just like most but if i could borrow money and pay you in plants id be happy too!lol! seeds are like a few ponds/dollars each and soil is even cheaper. They have just had a lot of bad growth that they dont look good, well the biggest one anyway, the small outdoor one might make it if you lay of the ferts and let it do its thing. Peace