how much water evaporating?

[corykid]

Hey guys well i was wondering how much water do u normally have to replace because of evaporation? i do water changes on wens. for my 10g and normally by saturday i have to add water because it normally has droped by about 1 cm in water level, is this normal? (water temp. is anywhere between 78-81 F)

Thanks!

[bettagurl]

It's normal for some water to evaporate,i do my water changes every sat,but i have to add water once a week.i always have aged water handy:)

[jm1212]

i usually put in enough from PWC's so i dont have to add any until the next one, but sometimes when the humidity is really low more water eveporates than usual, and the opposite when it is really humid

[oscar83]

how much water evaporates on a number of things. the temp of the water, the humidity of the room, whether you have a cover on your tank, surface agitation... in my 75 gallon saltwater tank i couldnt tell you how much water evaporates b/c i have an automatic top off system, but in my 75 gallon freshwater tank i probably lose about an inch of water a week.

[Mgamer20o0]

mine goes down more then a 1 cm. mine drops a 1-2 each week if not more.

[glasstapper]

I live in a desert, so I've noticed some water loss as well. I'm still cycling, so I just add the extra inch or so of water during my frequent water changes.

[THENEU]

Mine Goes 3/4" Down Last Week Bcoz Of High Temprature. Today I Will Add Some Water