Thanks for all the nice tips! About the fans, it sounds logical what you say, and I might do such a thing in the future, but for now, I'm not sure if I'll do that. It makes a lot of noise as it is, and I'd had to mod the electricity system again, which was creepy enough the first time. :P We'll see though, it's good to know of nonetheless.

Cool to see that chart! I will definitely try having my ph at that level from now on. I do have a problem though. My nutrients make the water brown, and I would believe that affects the color of the PH tested water, no? My PH kit is basically a small vial where i put a little water in, and a few drops of a solution. Then check the color of the water on a chart. If it is already brown to begin with, wouldn't that make it look more acidic on the chart?