Here's a little quid pro quo for ya - let's solve this clone issue first, and then you can scratch my back.
1) Do the clones have roots showing yet?
2) If so, what lights are they under - 1K or some fluoros?
3) How many times a day are you flooding?
Without you answering those questions, my first (and I'm pretty darn sure it's correct) guess is that you're overwatering them - clones that size should be getting watered about once every 24 hours - guessing you're more in the 3-5 waterings per day mode? Back off of that and you'll be fine.
Now, to my questions for you, my good man........
Firstly, in your professional opinion, could your 12000BTU portable AC (your old one) handle an 8x8 tent with 2 uncooled 1000HPS? Asking because my garage gets up to ~110F in summer, so running a sealed tent is my only option, but I don't know if 14000BTUs (the portable I'm planning on getting) would be enough for 2 uncooled 1Ks, especially with the ambient air around them so hot.
Secondly, could you take some more pics of your split A/C? I'd really like to have one AC cool the entire garage (20x10), because putting a portable AC in each tent will get costly and exhaust my 60 amps real quick.
That being said, what does a split AC look like? Mainly from the outside, as I could care less about the inside, but for security reasons the outside would have to be fairly nondescript.
Thanks for your time, and don't water your plants so damn much