What are you cleaning? caulerpa that has been sucked up against it? I notice that no one has any foam pads or bio balls in their setups. . . I can understand the lack of foam due to it getting clogged but bio balls?

And can you tell me the reason for the piping from you main pump returning to the 'over flow return area' I don't see a valve. If it is wide open, how is water going to the tank? Wouldn't most of the water stay in the sump?

Bio balls are another filtration method, no used by many people any more if they have LR.

You can use what you like, but maintenance things like foam are not always a good idea, personaly I think that my corals would like a second chance at the DT's I put in the tank and not filter it out with foam.

My recirc line had a 1" to 1/2" fixed reducer so that would keep the flow under control. I don't like to have valves that if adjusted could overflow the tank, safety against other and maybe my self. I have done dumb things before.

Lee

ok, well if I'm not using foam and its a toss up to use bioballs, I have a lot of room in that sump for a Fuge. mmmmmmmmmmm,