Open top tank evaperation
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Open top tank evaperation

This is a discussion on Open top tank evaperation within the Beginner Freshwater Aquarium forums, part of the Freshwater Fish and Aquariums category; --> I was wondering how much faster do open top tanks lose water than covered tanks as far as evaporation? is it a big difference ...

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Open top tank evaperation
Old 03-21-2012, 05:00 PM   #1
 
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Open top tank evaperation

I was wondering how much faster do open top tanks lose water than covered tanks as far as evaporation? is it a big difference or not? was planing on possibly converting to an open top and was just curious.
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Old 03-21-2012, 05:38 PM   #2
 
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Yes, more water evaporates with no cover. Water is warm, and warm water evaporates faster than cold, plus it depends upon your room temperature.

With a cover, scarcely any water actually evaporates; it condenses on the cover overnight, then most of it drops back into the tank when the lights are on. Some will evaporate, but minimally by comparison.

Issues with open-top tanks. Fish will jump out; many fish given the chance will jump, especially during night when they may be startled by other fish or something. Dirt and objects can easily get in the tank; other pets like cats, and small children, are issues. Water evaporation being faster will get into the walls and ceiling, much as it does in the bathroom; this has to be dealt with to preserve the structure. Depending upon how close to the water the overhead light fixture is, there may need to be a glass separation to prevent splashes and water rusting the fixture.
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Old 03-21-2012, 07:34 PM   #3
 
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Thanks for all the info. and from hearing it an open tank does not sound to appealing. thanks again
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Old 03-21-2012, 07:39 PM   #4
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I have a 20l with a glass top and a 36 with a lose fitting plastic top, I barely notice any water loss over a week in the 20long but over the course of a week the 36 will lose at least an inch of water due to the openness of the lid.
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Old 03-21-2012, 07:48 PM   #5
 
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yeah i could only imagine how much an all the way open top would lose in a week. I have defiantly decide an open top is out of the question now.
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