water evaporation

[bmullikin1]

have a 75 gal salt w corner overflow, one fan on top to keep light cooler does blow a little on water. how much evaporation does occur in one day seems like one gallon or more. thanks for input

[Criminal#58369]

I see about 2 gallons or so on my 90 gallon, as long as it keeps your tank cool, its ok as long as you keep toping off to keep salinity in check.

[rick s]

Just make sure you replace the evaporated water with fresh water, not salt water.

[danch]

My 75 has been evaporating about a gallon a day on a short lighting schedule.

[Shagsbeard]

I am doing between one and two gallons a day. One of the advantages of running a sump is that the level of the display remains constant, and the decreased volume of water shows only the the return portion of the sump. You can take a look at my "under $20" auto top off in my gallery and PM me if you want to discuss it.

[SaltyDr]

I loose about 1 gallon a day in my 75 with 15G sump and 10G refugium.

[drummereef]

I lose close to a gallon a day on my 40g.