What's up bro. I'm trying out your ideas to cool my res as we speak, so thanks again for throwing out that "tying down ice in the res thing". With all due respect though - and I MEAN that man, for real - I think you're wrong. It's probably pointless now anyway, as the girl's plant looks pretty horrible. SO sad. "AC units CAN remove humidity to cool the air"? umm... Not only CAN they, they DO. That's the principle. My AC unit puts out a TON of water every day as it cools my house. Where do think that water is coming from? When the hot air, which holds lots of moisture, comes in contact with the cooling coils in the AC unit, the moisture condenses, collects, and drains to the outside. The cool, dry air is then blown back into the house. This process is repeated over and over. Plus, this girl's worst problem, among many others, is HEAT. And NO, most AC's don't keep the humidity at 40-60%.( Even if it DID, humidity is a HELL of a lot easier to address than CRAZY plant killing temps. Is the humidity killing her girl? NO. The HEAT is. Plus, 40-60 is not HORRIBLY high, and again, buy some freaking dampit if you're worried about it during flowering) On a hot day, that's an avg. RH for the outside HOT air. How could things POSSIBLY get worse if she were to cool the HOT ass air in her grow space?? You're saying that, cooling the res is more important than cooling the SOURCE OF THE HEAT? Why do think the res is hot to begin with? The AC would fix the bigger problem, that of a hot room, and bad ventilation. I understand what you're trying to say - I'm just PISSED because I'm gonna come off as one of those A-holes who likes to bitch and fight with other people who are just trying to HELP. We're all growers, and from your posts, it sounds like you've got WORLDS more experience than I do. But think about it: HEAT is her most serious issue; even if the res was still HOT AS HELL, and started evaporating like CRAZY, ..... GUESS WHAT? The AC unit will take that HOT HUMIDITY and suck out the moisture, send it outside, and bring more cool air back in. I mean, what would be easier? Cooling an absurdly hot room( with a nice cool res), with HID lighting in it, or cooling a hot res in a nice cool room?? That cool res won't help the horrible room temps, but the cool room will absolutely help the res stay cool><><>> Holy shit, man. I sound like such an asshole. Damnit. The girl's a MED-POT patient, man. MORE people should be helping, but not unless they're SURE their info is right on. Maybe I should take my own advice, but I'll wait until some more people weigh in. Peace, good luck to you STARGRL.