New guy question number 3 of 6,048...

[Haroldeez]

Would you say about a gallon maybe slightly less is normal or average amount of evaporation per day? 70 gallon display/30 gallon sump...

 

[geddavis]

For a 100 1gallon is a little much. If you want to slow evaporation you can put a solid top on the tank. Also the rate of evaporation changes with how much water is in your air. So if you live in an arid climate your tanks water will evaporate much faster. My 120 gallon system evaporates 2 gallons in a little over a week.

 

[sfin52]

I loose a gallon or a little under a day on a 75 g tank no sump. No hard cover and run dehumidifier.

 

[Haroldeez]

Thanks... as long as I’m in a reasonable range that makes it less worrisome. I have a rimless tank and DRY furnace heat in my home. Definitely will be looking for options to cover the tank

 

[Billdogg]

For me it depends on the season and temperature. In the summer with it's increased humidity, a gallon or so a day sounds about right. In the winter, with the gas furnace running pretty much non-stop, it goes up to 2-3g/day for my 120. Screen top, open sump, LED lighting

 

[Act1n1c_L1fe]

it also depends on how much air you have flowing over the surface of the tank, if you have a fan or ac vents pointed at the tanks surface, it increases evaporation rates

 

[Frtdrmrose7]

I have a 150G tank and I was originally running an open top but between the tank and sump I was losing 1/2-3/4G a day. I put a solid top on which helped but then I got the Tunze Nano ATO ( thank you caption contest)and installed it in my sump and now I don’t even worry about it. I setup a 5G jug with FW and I just swap it out weekly.

 

[Oshengems]

I have s 75g with a 30g Sump that’s about right, I’m doing about a gallon a day.....
Brace yourself summer is coming!

 

[dansreef]

I read all of these and chuckle a bit. I do not humidify my house air....two first floor large tanks and one big basement sump.... almost 3-4 gals a day of topoff..... Good thing my RODI system is solid.

 

[Justfebreezeit]

Im a little under a gallon for a 75g tank and 30g sump as well.

 

[Salty Lemon]

I live in AZ and lose water through evaporation like crazy in the desert air. So it all depends on where you live. I have an RODI unit constantly filling up my ATO. It is attached to outdoor plumbing/irrigation so that it can constantly fill up as needed -- which is often. I never have to fill the ATO -- just keep tabs on the RODI unit. I also have a lid, which helps a lot.

 

[BestMomEver]

My 60 drinks about a gallon or more every day. It’s an open top tank. I also live in the Deep South where it’s already 83+ degrees. Finally....!

 

[Saltyreef]

I have a solid top for my 40 breeder and only use it when i go on vacation or if im quarantining.(cross contaimination)
But i hate using it because of the amount of light it blocks. Especially after some dust and salt creep cover the top of the glass...

 

[MnFish1]

I have a 100 gallon redsea with a 40 gallon sump. Run a dehumidifier. I dont lose more than 1/2 gallon/day.

 

[Slim64684]

My 20 gallon net top was going thru about 4 gallons of top off every 10 to 14 days with my gas furnace running this winter. Now that it's warmed up and the furnace isn't running as much it hasn't been as bad.

 

[scriptmonkey]

I have a 75 and a 30 and I am losing about 1 gallon a day.

 

[Haroldeez]

Wow thanks everyone that definitely makes me feel better... it’s nice to proceed with confidence not worrying that I’m doing something wrong. Great forum