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Old 01-05-2014, 08:32 PM   #1
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Question evaporation problem...

Actually, First i need to know which type of water to use to refill my saltwater sump filter with after evaporation... fresh water or salt water? it is an open top acrylic sump, with protein skimmer...seems to be losing about a half to a gallon a day in evaporation... any way i could reduce that and still have it work properly and provide proper filtration?
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Old 01-05-2014, 08:35 PM   #2
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You need to use RO/DI water not salt water. When water evaporates from your tank the salt is still in there but with less water. Which makes your salinity rise. You can get a custom piece of acrylic cut and put that on your main tank to reduce evaporation. And what size tank do you have?
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Old 01-05-2014, 08:38 PM   #3
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I know to use RODI fresh water for refilling the tank.. the tank has a plastic hood. it is a 29G glass aquarium. im asking about evaporation from the sump filter itself... the filter is below the tank, it is acrylic, no top... hard to put a top on it with the protein skimmer and the return hose and such. the sump it self loses water.. thinking its evaporation... i refill it with RODI fresh water as well?
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Old 01-05-2014, 08:40 PM   #4
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Yes you do the same. Put RO/DI in the sump. There's not really much I could think you could do.. Add an auto top off
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Old 01-05-2014, 09:17 PM   #5
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A half gallon per day evaporation for a 29 gal tank seems to be too much. My 60 gal evaporates only 1/4 gal per day. Too much water splashing or leak in your tank may be.
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Old 01-06-2014, 12:45 AM   #6
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My 60gal with 20gal sump loses about 3/4 gal of water due to evaporation a day
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Old 01-06-2014, 05:37 PM   #7
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My 75 with a 55 sump loses a little over a gallon a day
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Old 01-06-2014, 07:20 PM   #8
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My suggestion would be to invest in a JBJ ATO and wave bye bye to topping off your tank forever. It was the single best purchase i've made for my tank.
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Old 01-06-2014, 08:12 PM   #9
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Quote:
Originally Posted by Mebbid View Post
My suggestion would be to invest in a JBJ ATO and wave bye bye to topping off your tank forever. It was the single best purchase i've made for my tank.
Agreed. You do not want to cover both the tank and sump. PH will be a problem most likely if so. Gas exchange at the water surface is very important. You are better off with the evap.
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