Help with standpipe / overflow chamber...PLEASE!

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thecoolguy

thecoolguy

Candiru
MFK Member
Apr 6, 2007
460
0
46
Irvine, CA
hello all,

got the 275g up and running, but the noise is killing me!

setup: center overflow with durso style standpipe built in - has the air tubing directly into the end cap with an airline valve at the end of the tubing to adjust air flow

problem: air tubing/valve does nothing in terms of adjusting the water level in the chamber -- 24hr toilet flush; also, the top of the end cap is probably about 5-6" at least from the top of the overflow

i am guessing this sound is happening because there isn't enough water in the overflow/pipes? hole somewhere in the tubing? the seal around the tubing where it went into the end cap is not solid?

what should i do?
 
just read up a little using the "search" - and to elaborate

given that the gurgle is happening because the dursopipe is trying to suck up more water than is available for it - is this a sign that the overflow's pvc is too large?

i did add a lot of mech filtration right at the exit in the sump of the overflow pvc - and that quieted it down a lot, i am guessing because it slowed the exit, and hence relieved some of that entry speed?
 
some final facts:

- water level should be good (tank is right, sump is right)
- if i blew in the airline it would temporarily raise the overflow chambers water level, but immediately drain back to gurgle/toilet flush height
 
The airline/valve combination is not giving it enough air. Remove the valve and see if that helps. If not, you will need to add larger tubing to allow proper ventilation.
 
What size diameter is your pVC for the durso ?

You may have a problem with the end caps being 5-6" lower than the overflow.

On my tank, the Middle line of the tee for the durso is at the same level as the lower teeth of the overflow. I am also using 1 1/4" PVC thinwall

I am getting ZERO noise.

stan
 
You are supposed to use an over sized Duroso. So, if you have a 1" drain you need to use a 1.25" or 1.5" duroso. The T should be where you want the water level in the overflow area, the cap should be above the tank water level with a small hole drilled in cap. Ditch the airline as well as I have never had much need for it when the duroso was working as it should. The key is to have it larger than the drain.
 
updates:

- put another airline hole / tube into the end cap of the durso
- turned off one of the return pumps in the sump (sump runs 4 return pumps for now, as that is how it is drilled on the bottom of the tank)

result: noise level down dramatically

questions:

- is this because of the additional hole? turning off 1 pump?
- what effect does turning off 1 of 4 pumps have? it obviously reduces the flow coming out of the sump, but for whatever reason (feel free to chime in) - the water level in the sump stays the same......

- does it matter how many or how large the hole in the end cap for the durso is? or is it add/enlarge until the sound is gone and water level good?

thanks for the help
 
the water level in the sump is the same as your moving the same volume of water just slower because of the turned of pump
 
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