Tropical Fish Keeping - Aquarium fish care and resources

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efeene 03-22-2012 08:37 PM

Water Temperature in Summer
So I bought and set up my aquarium at the start of October and things are going great! I live in Maine so the temperature of the water in the tank has always been reliant upon the heater. We have had a crazy hot spell the last two days - with temps at 80 degrees. It has risen the temperature in my tank from where it usually sits - 76.6 - to 77.5. I hadnt really thought about it before but I don't have an AC so in the summer my apartment can get quite hot - despite living close to the water. It shouldnt be a problem for a couple months but I want to get a head start in the possible problem. How do you manage to keep a cool/steady temperature during hot summer months?? Any help would be greatly appreciated.

Tazman 03-22-2012 09:15 PM

A simple stand fan blowing near the tank can be enough to keep the temperature down. 1-2 degrees difference is not going to cause problems. 5-10 can be stressful/ lethal to fish in a short space of time.

If the temperature skyrockets then ice made from water allowed to sit for 24 hours will work also. Do not use any sort of ice pack though.

AbbeysDad 03-23-2012 07:52 AM

Sorry Tazman but I believe that it is generally held that attempting to 'ice' water that is too warm can do more harm than good as it can often results in rapid temperature swings that are worse for the fish than a spell of hot weather. Perhaps it can work with the right size (eg rotating frozen water bottles) ice and diligence to change them out regularly - but likely not something you can toss in the water and go to work for 8 hours.

> I think the fan may be a better approach.
> Keeping the lights off may help.
> Open the hood up for more ventilation.
> Extra aeration to maximize oxygen in the water.

We had a heat wave last summer and my girls begged me for an air of course, I knuckled under and bought a fairly inexpensive portable unit for the living room. Kept the whole downstairs a wonderful 70 when the temps outside soared to 90F+. It was great relief!

Byron 03-23-2012 10:13 AM

I have my fish tanks in a separate room, which in summer can get very hot, well over 90F, due to being south and west facing wit6h glass block windows on the west--which, believe me, really cause heat. I now have a portable air conditioner that keeps the room around 80F during such days, and that has worked well. The tanks obviously will not be warmer than the room.

Prior to getting the AC I did nothing. I never lost fish or plants due to the heat. The fish were a bit less active, naturally, but there was no gasping for oxygen. But my tanks are very heavily planted, which may help.

I agree that fluctuations back and forth, as from repetitive water changes with cooler water or floating ice, is probably worse than just letting things go. In the tropics, both SA and SE Asia, days can get very hot with water in the high 80's and then cooling down during the night. This is a slow change either way, preferable to more frequent variations.

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