How do you deal with water evaporation? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 12 Old 02-08-2007, 12:29 AM Thread Starter
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How do you deal with water evaporation?

Hi I Have a 30 gal tank that houses 2 fancy goldfish, a pleco and a dojo loach. Lately due to our weather I loose approx 1 inch a day of water...with out thinking I just replace it with fresh treated water....no I think I may have crashed my tank, One of the goldfish is sitting on the bottom and the other is at the top in the corner...the pleco and dojo seem un effected. the temp stays pretty much the same at 74 degrees as I have a fan blowing on the tank. Any suggestions on how I should handle this?

All the best Terry

20 Gal 3 Black moores
30 Gal 1 Fancytail 1 Oranda 1 Dojo Loach 1 Pleco
2 3 Gal betta tanks
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post #2 of 12 Old 02-08-2007, 01:30 PM
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do u have glass or a cover on top of the tank?

i have heard of adding ice cubes to water to cool it, but have not tried this method personally, due to our cold weather

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post #3 of 12 Old 02-08-2007, 02:26 PM
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I used to make distilled ice cubes to put in my goldfish tanks. Summer temps can reach over 100 around here. It seemed to help but it requires constant watching to keep the temps low enough for the goldfish when using ice.
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post #4 of 12 Old 02-08-2007, 02:46 PM
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Quote:
Originally Posted by shavon
I used to make distilled ice cubes to put in my goldfish tanks. Summer temps can reach over 100 around here. It seemed to help but it requires constant watching to keep the temps low enough for the goldfish when using ice.
Same here...I live in Florida so I need to.
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post #5 of 12 Old 02-08-2007, 03:01 PM Thread Starter
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Hi Yes I have a cover...here is a pic of the tank. Its not so much that I am having trouble keeping it cool...its just that its so dry here the water evaporates quickly...about an inch a day and with me adding new water everyday I thought maybe Im crashing my tank....I did a filter cleaning and 25% water change last night, the Nitrites were reading .08 and the Nitrate was 80. No ammonia showed. Any ideas on how to keep my water level up...or is that not much of an issue if it doesnt get below my under water power head? Thank you all for your replies!!

All the best Terry

20 Gal 3 Black moores
30 Gal 1 Fancytail 1 Oranda 1 Dojo Loach 1 Pleco
2 3 Gal betta tanks
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post #6 of 12 Old 02-08-2007, 04:01 PM
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You will harm the tank due to the heavy evaporation. Dissolved solids in the original water (tap I assume?) will continue to reach higher and higher concentrations due to the evaporation. Do your regular water changes with tap water but make up for evaporation with distilled water.
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post #7 of 12 Old 02-08-2007, 04:12 PM Thread Starter
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Thank you so much for the info! I think I will also replace the water more frequently rather than letting it get down so much that Im adding alot of the replacement water at once. Just do little bits at a time.

All the best Terry

20 Gal 3 Black moores
30 Gal 1 Fancytail 1 Oranda 1 Dojo Loach 1 Pleco
2 3 Gal betta tanks
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post #8 of 12 Old 02-08-2007, 04:52 PM
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I noticed that when I went from the plastic hood that came with my tank kit to an all glass hinged top that my evaporation is pretty much stopped. You may want to try getting an all glass top.
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post #9 of 12 Old 02-08-2007, 09:44 PM
Rather than using distilled water, RO water should be used. Distilled water should be your second choice, with de-chlorinated tap water third. This should be tempered by me adding this, if you cannot get ro or distilled water, and your tap water is not chlorinated, use tap water.
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post #10 of 12 Old 02-08-2007, 09:57 PM
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Why should RO water be used instead? It generally needs to be reconstituted for trace elements anyway just like distilled and generally isn't any cheaper. And with the heavy evaporation it is the dissolved solids in the tap water that will build up (they don't evap out with the water) and cause problems so something like distilled water that doesn't contain dissolved solids needs to be added. When you think about it distilled water is essentially exactly the same as the water that will have evaporated out of the tank...nothing but pure water!
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