Who Runs Open Tops?

[jason sartain]

I've got a 240 gal in wall with 100 gal sump and 34 gal fuge with 3-400w MH's and 2-54w T5 actinic's,and lose about 5-6 gals a day.
I love my ATO!!!!!!

 

[hayabusa72]

I have 120g with 2 400MH ,I ws losing about 4-5 gallons a week ,I added a cool mist humdifier to room now i add maybe a 1-2 gallons every 2 weeks

 

[texhorns98]

hayabusa, I'm glad to hear I may not be the only one with a freakishly slow evap rate! I never did the 24 hour thing, but I did check at roughly 72 hours and did the math.