Ive got i think 5 in this tub now. 2 of the 99 cent store 1's and 3 the middle sized i think 6 inches or maybe bigger i don't know. I have more of the smaller 99 cent store ones. I cant figure out which to use. I have 4 walmart dual pumps tho as well for 2 tubs and I'm using 5 of the airstones on the tub with the larger plants so get more because there roots are larger. O yeah the roots are still growing fast. The plants seem to be on a timer every night around 3am is when they droop it seems. I don't get it water level is low... ph is low i ordered a ppm tester and i used 2 diff kinds of strips for now and neither of them changed colors so i don't think its over fert. If it was wouldn't they stay droopy?? instead of perky all day until 3am droop i close the closet then in the mourning there perky again. I change something else Ive done pretty much everything everyone has told me on here. Drowning sounds reasonable i guess, but wouldn't they be drowning all day?? i dont get it the temp it fluctuate a little tonight before they drooped i had to turn on the ac a couple times to keep it down maybe cold air blowing on them made them droop?? its annoying as all hell figuring it out, but at least Ive perfected allot of things since now if i could just get past this!!!! i wish there was like a place in town i could call and have them come look at them lol. I have pictures and everyone says something different. I want to sex them, but I'm scared to traumatize them any could it be to much light from added the cfls maybe and they are were out towards they're dark time so they droop? I've been researching constantly and found several different answers tryed everything and i have gotten the same results its irritating. I appreciate everyone trying to help tho.