diy overflow

[CHOMPERS]

Has anybody figured out a shure fire way of siphoning off the bottom?

From the intake pipe, add a 90 and then a tee. One end of the tee should point up and the other should point down. Add a pipe to the bottom side to reach to the bottom of the tank.

I'll go take a pic, brb.

 

[swamptrout]

You also did something wrong. The water level can only drop to the level of the intake of the overflow. Simulate another power outage and see if the return from the pump is syphoning out water. If this is the case, drill a hole in it just below the water's surface.

As for not restarting, post a picture. Since you have all 66 pages, you should be able to figure out what you did wrong (you made some changes from the original just like everyone else).

I have simulated another power outage and yes the return pump is syphoning water out to below the overflow level. I have drilled a hole in the return just below the water level so this has been fixed.

I have not changed the design one bit. I am working on how to get a pic or illustration together.

 

[DB junkie]

 

[snake513]

im going to do one of theese with a wet dry on a 210 i have a couple of questions. what size pipe should i make it out of? what size pump would match the overflow? thanks

 

[rallysman]

Don't match the pump to the overflow, just make sure your overflow is capable of flowing more than the pump. If the overflow is capable of flowing more it can't overflow the tank, and it will not pull out more water than the pump can return.

What flow rate are you looking for? I filtered a 265 off of a 1" overflow for a long time.

 

[snake513]

well the tank has an fx5 and emporer 400. i want to get rid of the emp and ad a wet dry.what flow should i go for ?the tank will eventualy have 7-8 birchers 1 aro something in the middle. i have a empty 55 gal that i will be making the wet dry out of. what is a good,quiet pump

 

[snake513]

anyone???????????????????????????

 

[SilkyPimP]

sorry to bump old thread but the pics on post 292 are now showing up and im trying to make these overflows work and not flood out my fish room, anyways i was trying to see what he was talking about
thanks

 

[Atom_the_bomb]

are there any alternative for the air check valve? I can't find one here in the Phil.

 

[CHOMPERS]

Use just a piece of air line and crimp it over (fold it). Then secure it with a clamp or rubber band. Keep the free end under water in the fish tank.