evaporation or ?

[SmyrnaReefer]

i just started my sump yesterday around this time 4:30PM. i marked the level on the return side for monitoring. 24 hours later, the water level has dropped 2 inches which is roughly equal to 1 gallon. is it likely that the tank could evaporate that much over 24 hours. i have checked all plumbing connections and there are no leaks that i can see or feel. the pictures below show water on the sump cover and my markings to indicate level. the sump is in the garage and is cooler than the water..

any thoughts would be appreciatted and hopefully make me feel better......

top (picture is sideways)

level (picture is sideways)

 

[estutesman]

I loose about 2 gallons per day from my 125.

 

[SmyrnaReefer]

good to know, any else agree/disagree?

 

[poolkeeper1]

I average about 2 1/2 gals a day with my rimless 105 gal With Metal Halides. I will LYK the difference once the LED's are on.
Bill

 

[Jennifier615]

Me too I lose about 2 gallons a day too.

 

[orthokardia]

I lose about 2 or 3 gal /day to evaporation and also spill a gallon or so from clumbsiness

 

[NeveSSL]

I'd say that's normal.

Brandon

 

[SmyrnaReefer]

good, now i can relax a little, didnt lose much water before i added the sump, i will try to get some pics out over the next coupele of days.....thanks for the knowledge

 

[Jennifier615]

Correct me if I am wrong, but it is all the exposed surface area/waterflow/lighting that attributes to the amount you lose.

 

[Pickupman66]

Jennifer. No correction needed. When I don't have my sump covered I lose 2-3 gallons a day. As much as 25 a week. Half that when I have it covered. And the heaters run less.

 

[05grandprix]

I've got a 150 cube with a 20g sump with my mh and t5s I lose about 3-4g a day but both tank and sump are open

 

[SNAKEMANVET]

I lose around 3 gallons a day on my 240.If you use fans for cooling you will lose even more.