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Why is my tank losing water2007-11-24 23:44:03

I have a 2.5 gal tank housing 1 Betta fish. I've gone through two filters (One was in-tank and the one now is under-gravel), and slowly, little by little, I've noticed that the water level in my fish's tank is dropping. It only does this when the filter is on.

Why is this happening, and how can it stop?

Answers:

All fish tanks lose water through evaporation, especially during the winter when you have the heat on and if you don't have a top on the tank.

If you have a pet cat and you don't have a top on the tank it might be drinking from the tank, which could be helping lower the level of the water too.

You didn't indicate how much time is passing, but a 2.5 gallon tank is very small so you are going to notice it more than if the tank were a 20 gallon or larger.

One thing you can do to make sure your under ground filters aren't causing the problem is to check for water on the outside of your tank while your filters are running. Make sure your hands are completely dry and and feel around back there, and even check the hoses coming out of your tank.

My brother and I had several 10 gallon tanks with tropical fish when we were younger. Now, I have a 75 gallon. I also had a 55 gallon, but I sold it a while back.

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it will always lose water. evaporation!

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Maybe the bubbles from the filter are making the water evaporate faster. As long as the table, or whatever the tank is on, isn't getting wet then you don't have anything to worry about.

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you can't stop the slow loss of water it is probally evaporation unless your filters are leaking out of the tank

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evaporation due to the filter. its normal

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Evaporation. Do you have a top or cover for it?

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Is it covered? If not, evaporation will claim a fair bit of water. Is your house very dry? Do you have a de-humidifier?