Dursa overflow help

[Dcal]

See attached video. Is my water level too high or low or is this just how they work?

 

[Conovan]

I just get audio from that link.

 

[Dcal]

I just get audio from that link.

Does this one work

 

[un5tab1e]

Hard to tell what you have going on there. If the one on the right is a drain thats full siphon it should be lower than the one you have on the left. Almost looks like its pulling more than you are returning. Is there a gate valve installed?

 

[Dcal]

Hard to tell what you have going on there. If the one on the right is a drain thats full siphon it should be lower than the one you have on the left. Almost looks like its pulling more than you are returning. Is there a gate valve installed?

Sorry for bad video it’s this if it helps. The water level will drop below the overflow and then fill right back up continually so I think you might be right about pulling more than returning.

 

[un5tab1e]

I had the same setup when I got my tank and scrapped it for a Herbie with the return over the top. I think even with a Durso you still need a good valve under it to control the flow and stop what it's doing.

 

[Dcal]

I currently have vinyl tubing connecting the overflow down to the sump. Any valves you would recommend that wouldn't require a lot to change?

 

[un5tab1e]

I used spaflex on mine and a brs gate valve. You can work on the drain after turning the pumps off without much of a mess. Just wait for the lines to clear out.

 

[un5tab1e]

Well as long as you don't remove anything in the overflow and just work under the tank you can take it apart without a mess I should say.

 

[Conovan]

I have a gate valve on mine to stop that flushing.

 

[Dcal]

So the tubing is 1 1/4 so if i bought both these parts in 1 1/4 would that be correct? https://www.bulkreefsupply.com/gray-male-pipe-adapter-spigot-x-barb.html

Economy Gate Valve Slip x Slip

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[Conovan]

yeah a spigot-barb would work to add a valve.

 

[Biglew11]

the hole in the top of the durso is a tad too small and is creating a full siphon. you can gradually increase the hole size and it will stop the flushing cycles. imo i would not put any valves of any type on a durso drain.

I had the same setup when I got my tank and scrapped it for a Herbie with the return over the top. I think even with a Durso you still need a good valve under it to control the flow and stop what it's doing.

i'm about to do the same with mine just for the piece of mind of having an emergency drain.

 

[Dcal]

the hole in the top of the durso is a tad too small and is creating a full siphon. you can gradually increase the hole size and it will stop the flushing cycles. imo i would not put any valves of any type on a durso drain.

i'm about to do the same with mine just for the piece of mind of having an emergency drain.

I'd say its about 3/16 inch what should I get it up to?

 

[Biglew11]

Get a cheap drill set from lowes and go up one size at a time until this cycling stops. I have about a 1/4 in mine with a piece of standard ro tubing about 1 3/4 long inserted into it.

 

[Dcal]

Get a cheap drill set from lowes and go up one size at a time until this cycling stops. I have about a 1/4 in mine with a piece of standard ro tubing about 1 3/4 long inserted into it.

Thanks man. After looking at it again its definitely a siphon starting and stopping as you said

 

[Bryknicks]

Yes its a siphon issue. Drill the hole bigger (if needed) and put a piece of airline in there. Then you adjust the airline up or down to hit the sweet spot and stop the siphoning.