Sump & filter socks - 4 or 7 "

[hfp75]

Ok so my plan is 3-4 4" socks....

Next question, should they be in the water or out? Or half in & half out?

[The Grizz]

Top rim of sock slightly above water level so that when it get plugged up water can just run over the edge into your sump.

[rickcasa]

The 200M rectangular filter sock by Eshopps will last about a week before needing to be swapped and it's synthetic so it's strong. But because I've learned to allow microorganisms to flow right through the sump 20hrs a day to feed the dt's sponges and gorgs, I have a tee that's directed both to the sock and the skimmer chamber. During feeding, I close a valve and all the flow is directed to the sock and keeps the sump clean...great DT polisher too.

[hfp75]

My plan is to have the tank water empty into an area thats baffold is 2 inches from the top of the sump, this chamber will have chaeto in it. I am planning for the returning water to stir and swirl the chaeto...

Then when it over flows that baffold there is a flat shelf that's about 6" long with a 1 cm high water stop at the end. In that flat shelf I will set the 3-4 4" holes for socks so water can just flow down into the sock into the next chamber. If it over flows it needs the 1 cm of flow to go over the water stop and overflow into the next chamber unfiltered....