DIY Overflow not staying primed.

[Lyferxb9s]

The only way this thing will stay flowing is with the standpipe capped and a aqualifter on it. Did I screw something up and I just don’t see it?

 

[Lyferxb9s]

Just added some more bio media

 

[BIG-G]

The tee fitting should be on the other side of the U . same side as the vent.

 

[BIG-G]

this is just a quick pic taken off the internet. Don’t pay any attention to the short vent . The vent needs to be higher than intended water level like yours is. Your drain just needs to move to the other side.

 

[Lyferxb9s]

Thank you!!

 

[wednesday13]

If this is for an autodrip drain id just drill the tank… theres probably not enough flow to keep a siphon no matter what u do…. IME this style overflow is always destined to fail with the low flow of autodrips in tank or from a sump… some guys get away with using 3/8”-1/2” lines to account for the minimal flow but theres no guarantee like with gravity… it will come back to haunt u. Drilling glass is easy if u take ur time, less work than all the plumbing u did already ?

 

[Lyferxb9s]

OK so I made a new overflow and fixed it. Thank you!

 

[rvadog]

Dumb question maybe but how do you keep water level stable if you're constantly adding water?

 

[Lyferxb9s]

Dumb question maybe but how do you keep water level stable if you're constantly adding water?

It goes out the overflow on the left side of the sump