dookie;3291391; said:a cheaper way to cool down a tank is to buy one of those cheap mini fridges, drill two holes through it, one on each side and coil some vinyl hose through it and constantly circulate your tank water thru it like a radiator. The whole thing will cost you less than $100. You can probably find a used one for less than $50. Although you can't really regulate the temp accurately, you can however adjust the length of hose you use to somewhat regulate temperature.
How would this be cheaper then 4 two liter bottles? Not to mention the energy consuption your mini fridge has compared to what it takes a regular freezer to freeze cold water out of the faucet.
More aeration should do the job. Last year, I tried the frozen water bottle method - pain on the butt!
The tank temp only went down from 90 to 88!
This year, I run my systems with a good air pump that can run up to 60 air stones! I put 6-8 air stones in each tank - Tank temp 84-86
Frozen 2 ltrs, quick easy and cheap, Dorm fridge wit 2 holes and a coil of hose inside the long term solution way to go. (beats a "Aquarium Chiller Unit" by $400)