Evaporation - what is a reasonable amount

[Coralgurl]

I'm noticing that I'm losing almost a gallon of water a day to evaporation out of my tank (55gl).

I've got a DIY HOB refugium, which is throwing a lot of bubbles back into the tank, causing some splashing, nothing on the floor or anything like that, a bit up on the lights. I've got the pump turned as low as possible. I was thinking about grabbing a filter and directing the water into the filter, then back into the tank to see if this will help. Any suggestions or ideas or is this acceptable water loss?