"i also noticed part of the bottom of the tank is brown. is that your new tile? if so, why did you order so many? are you supposed to replace them all the time?"
No, that's not my new tile.. I haven't set that up yet. I started having using paper towels as substrate, but crickets kept hiding under it, so I looked over my house and found some 8 x 8 inch tiles. It doesn't cover the whole tank, but at least it keeps the crickets from hiding under the PT while I'm able to set up the new tiles. the new tiles are 2 x 2 inch each one, so they are a lot smaller, and I need more of them to cover the whole tank.