DIY PVC Overflow - check valve issue?

[duanes]

I had problems when I built my own overflows out of PVC, constantly loosing prime/building up air pockets etc., now I use the 1 1/4" commercial tubes, ( I think they were @ $5 each from Drs foster smith), and do not need to use check valves.
I do think if you are loosing suction, the Aqualifter would be great insurance. Especially if the alternative is a burned out pump, or overflowing tank.

 

[mithesaint]

Ok, I'll try again. What did you cover the holes in the over flows with to prevent fish from taking a roller coaster ride through the over flow? In one week, I've rescued 4 fish from the sump, so I NEED to put some sort of mesh over the hole. Three cories and a German Ram have been rescued so far. I'd prefer to stop rescuing fish. I'm thinking of using the mesh from an old fish net. Thoughts?

Thanks.

 

[Danger_Chicken]

I cut pieces of an aquaclear filter and zip tied them to the end of the intake. The Aqauclear sponges have pretty big pores so shouldn't clog to easily.

 

[chesterthehero]

strainers, screen, sponge, hoghair floss.. prettymuch whatever you want.. for a while i used a floating worm feeder..