This is going to be tough bro... guys are right I see their point, but I see yours as well. Raise the lights, remove all lower heavy affected leaves, turn over the sucers (hopefully you have always removed runoff?) to lift the plants up from that floor and prepare the balanced food in 1/3 dose. Have you flushed them with just plain water? Than you need to feed them, go low on EC but give them everything what they need. Thats what I would do on your place. The most important thing is: to take some advice of this whole situation to the future, learning and getting experiences, that counts also. Head up bro! GL