Couple of Suggestions. . .
Suggestion #1) Set up a cooling system that can be modulated
Setup A)
Get a separate container for water, pick up a pump and run a hose from the output of the pump THROUGH your tank, and back into the outside container.
Normally, if it were not an aquarium, I would suggest using copper piping for the "hose", but most metals are toxic to fish if the exposure is long enough. In this case, I would suggest the thinnest plastic tubing you can find. And by thinnest, I don't mean the smallest radius, I mean the actually thickness of the material the tube is made out of.
After that, it's just a matter of keeping the water in the outside container cold, and you don't have to worry about causing major temperature fluctuation. If you find it's cooling too fast, run less hose through the tank. If it's not cooling fast enough, have a longer length in the tank (coil it).
*NOTE: Do NOT unplug your heater if you have one, it will kick on if you leave the cooler unattended for too long and you actually cool your water TOO much.
Setup B) Stolen from http://www.aquaticcommunity.com/Aquarium-chillers/
What you’ll need
Suggestion #2) Kiddie Pool/Tub it up (Not as viable)
Water has a high heat capacity, so one way to have less flux on your temperature is to add more water. Of course you're limited by your tank size, and you can't rightly put your fish straight into a kiddie pool (which, unless your tank is gigantic, should have more water) So put your tank directly into a kiddie pool that has been filled with water (careful not to spill . . .). The greater amount of water will need significantly more energy (heat) to raise the temperature. And if it does raise too high, add cold (and remove the warm obviously) water to the pool until it's just below the temp you want your tank to be.
Suggestion #1) Set up a cooling system that can be modulated
Setup A)
Get a separate container for water, pick up a pump and run a hose from the output of the pump THROUGH your tank, and back into the outside container.
Normally, if it were not an aquarium, I would suggest using copper piping for the "hose", but most metals are toxic to fish if the exposure is long enough. In this case, I would suggest the thinnest plastic tubing you can find. And by thinnest, I don't mean the smallest radius, I mean the actually thickness of the material the tube is made out of.
After that, it's just a matter of keeping the water in the outside container cold, and you don't have to worry about causing major temperature fluctuation. If you find it's cooling too fast, run less hose through the tank. If it's not cooling fast enough, have a longer length in the tank (coil it).
*NOTE: Do NOT unplug your heater if you have one, it will kick on if you leave the cooler unattended for too long and you actually cool your water TOO much.
Setup B) Stolen from http://www.aquaticcommunity.com/Aquarium-chillers/
What you’ll need
- A small canister filter with the motor on top
- A bucket
- Plenty of ice
- Fill the bucket with ice.
- Immerse the lower half of the canister filter in the ice.
- Use the filter as you would use a normal aquarium filter.
- Replace the ice continuously.
Suggestion #2) Kiddie Pool/Tub it up (Not as viable)
Water has a high heat capacity, so one way to have less flux on your temperature is to add more water. Of course you're limited by your tank size, and you can't rightly put your fish straight into a kiddie pool (which, unless your tank is gigantic, should have more water) So put your tank directly into a kiddie pool that has been filled with water (careful not to spill . . .). The greater amount of water will need significantly more energy (heat) to raise the temperature. And if it does raise too high, add cold (and remove the warm obviously) water to the pool until it's just below the temp you want your tank to be.
