I've got a 75 gallon with a 20 gallon sump. The tank was just started on a fishless cycle yesterday, and I don't have any cover for the tank or sump yet. I have a 1" PVC
overflow that is teed and then ball valved. The tee splits the pvc
into my wet/dry filter and my refugium. Water moves much more vigorously through the wet/dry system, while it flows more slowly through the refugium and eventually trickles over into the wet/dry system. I then have a Deep Blue Triton 3 pump as my return pump. It is mostly 3/4" vinyl hose/pvc
, but there is a small section where the diameter drops down to 1/2". I calculate the pump as pumping ~460gph.
Here's my problem: Water is slowly disappearing from the return pump section of my sump only. The return pump section holds about 3 gallons of water. Every centimeter of water height is equivalent to about .2 gallons of water.
In the past 13 hours I have lost .6 gallons of water. Does this seem correct to anybody? It doesn't seem like a crazy amount, I guess my return section is just so small that it's quickly noticeable. I can't find any leaks and with such a small amount of water missing it's hard to tell if the pump is pumping too quickly and sending it into the display tank or if it's just normal evaporation.
Thanks for the help