So how do you manage bubbles back itno the return from all that comotion as the water returns? Or is it not a problem at all.
There are a ton of bubbles but they get dispersed before the pump. My current sump is pretty big too soI have a lot of distance between the drains and the pump. I actually have 3 drains plus my skimmer dumping into the left side of my sump. I have the tank drain, the 20L frag tanks drain and the 10 gal
frag tank drain dropping into the same area. I have some rock that breaks the surface of the water and acts as a baffle.
On my previous set up, I had a 20 gal
tank on the floor as my sump. The 25 gal
rubbermaid was sitting in a short TV stand so it was elevated above the sump. I had a PH in the sump that pumped into the fuge and then it gravity drained back into the sump. I had a small container in the sump that was wedged between the tank walls that acted as a baffle to stop bubbles.
On my current set up, I have a 75 gal
stock tank. I have a 15 gal
rubbermaid inside the stock tank. My display drain is Y's off and part dumps into the left side of the sump and another part dumps into the fuge. I have a ball valve on the fuge side to regulate the flow in the fuge. I drilled some holes in the side of the rubbermaid so that the water drains back into the sump. I have bubbles in the fuge right now but they don't make it to the sump. I did have a PH supplying the fuge but I removed it when I re-did my plumbing.
I need to get some pics of my current setup. It is a PVC
It is very low tech though.
As for the heater, I would not let it sit on the bottom of the rubbermaid as it could melt the plastic. You could put it on some rock though.
Let me know if you have any more questions.