I have a 55 gal
reef tank set up with a Tidepool SOS filter and a 20 gal
sump. I have been running the system for 3 days.
I have adjusted the water level with the overflow control rod. After running the system anywhere from 8 to 12 to 20 hours, all of a sudden the level in the flow boxes will start rising. The water then flows over into the overflow tube and bulches many times, goes up and down, up and down, and WHY?
Does anyone know why it does this and what I should do? It seems to run just as well with the cap and control rod as without.