Ive had a chest freezer set up for a while now, and ive had alot of success keeping bait alive in it. sometimes its overcrowded, sometimes nearly empty. so i believe ive got a pretty good filtration set-up, and enough oxygen going into the water. but heres my problem... i bought a small submersible pool pump/filter from the net a while back, and use it as a "main filter" and ive also got a small (160GPH) pond pump inside of a plastic coffee can, with the lid on, 1000s of tiny holes drilled in it, filled with poly fill pillow stuffing as my "secondary" filter. between the two of them, the water slowly warms up. i left it running for a week straight on accident, and the water temp got up to 92 in my 65 degree basement. (somehow one poor creekchub was left behind, and it actually survived) well i filled my tank back up with bait a few days ago, and did a partial water change, mainly to cool it down. yesterday it was right around 80 degrees so i plugeed the freezer in for a bit. no problem, ive done this before with great success. well i forgot to unplug it untill this morning, and not so suprised my water was at 30 degrees. Ironically, there was only 1 creek chub still alive. i have no idea if it was the same one!! MY QUESTION TO YOU... do you guys have your tanks on some sort of timer system? for the freezer feature? or the air pump and/or filters? how do you regulate water temps? and will this method work if your away a few days? example: baby was sick and in the hospital a few weeks ago, so i wasnt home at all for 4 days. all bait dead when i got home! im including a picture of my "tank" thanks in advance for the help/ ideas!