evaporation

[sharkboy]

Is there a formula for figuring out how much water evaporates daily? I know there are several factors that contribute to this such as size of tank and lighting etc, but is there a way to estimate this?

[akm]

Length of tank multiplied by width of tank multiplied by height or the amount the water level dropped. It's the volume formula.

[akm]

Oh yeah, divide that by 128 and the answer will be how many gallons evaporated.

[GaryP]

The amount of water you have to add to bring it to the same level it was the day before?

Formula: 1 gal. added = 1 gal. evaporated

[sharkboy]

The reason, I asked the question is that the auto top off does this for me so I don't have exact figures. Jim Norris mentioned that his tank evaporated .5 gal per day so I was wondering how you could get an accurate number.

[NaCl_H2O]

It varies day-by-day, depends on temp and humidity of the air in your house

[Jimnorris]

I got my figure from what I added to the sump everyday to bring it up to a certain level.. I added fresh ro/di water manually. But know I top off with a kalkreactor setup. On my old tank I evap about 5 gallons of water aday.
Jim