Evaporation amount question

[crny1]

Hey all,
I have a 75 RR Oceanic tank along with a 30 gal sump. Anyone one have a real close setup that would be able to tell me what there evaporation rate is? I dont have any tops on the tank or the sump. Tank is @ 76 degrees and the room temp is constantly around 69-71 degrees. I think i am evaporating alot of water per day. I am having to add about a gallon a day to this thing. Does this sound normal? I know there are alot of variables that determine evaporation rate but i was wonder what your take on the situation might be.

Thanks
Wes

 

[pk1]

I think that sounds about right...about what I had on my 55gl and 40gl sump.

 

[Deleted member 7065]

Also depends on you lights and fans etc. Hard to tell. 1 gallon is not too much.

 

[mhurley]

Sounds rignt. My 425 gallon system does about 4 to 4 1/2 gallons a day.

 

[whiirly]

I use 2 to 3 gallons a day in my 110

 

[aurorafish]

My 90 evaportates roughly 2 gallons a day, in the summer its a bit less. I recommend getting some kind of auto top off system, makes life so much easier.

 

[pyroskennels]

when i had my 75 i was evaporting about 1 gallon a day also. now with almost 300 im at about 5 gall every 2 days but im also only running one light right now

 

[crny1]

Thanks guys......guess im not out of the ballpark then!

 

[Naperville Reef]

i have a 20L with a 10 gallon sump and i top off about 1 gallon a day