Tank ready to overflow

[bighead]

I have a 90 gal RR tank with 40 gal sump I have been running this setup for a couple of years the water level in tank is getting higher and the sump level is getting lower what would cause this my pump is running good and there are no clogs anywhere in any pipe

 

[JaySchulz]

Is there a significant amount of algae buildup in the plumbing? This could effectively not allow as much flow.

 

[Dmorty217]

Something is restricting the flow into the sump of the setup has been running for years

 

[ROB2005]

Do you have a ball valve on the return? If so throttle down the flow so the so the flow going out is equal to the flow coming in. Be sure to check for clogs or any other type of buildup in your pipes.

 

[bighead]

I took everything apart today there was almost no build up in any of the pipes I cleaned everything up and put it back together

 

[mcgyvr]

What type of overflow is on this tank?
Got pictures?
How much has the level changed?
How fast is it changing?
Is the level staying consistent (just higher than it was) or is it just filling up and you need to turn it off?...

Give more specific details/behaviors on exactly whats happening,etc...

 

[rocsec1]

Same return pump? Perhaps the flow from the pump has changed? If you aren’t using a valve to balance the flow I would suggest that.

 

[bighead]

I use a durso overflow
The level changes over a couple of days
The durso can handle way more gph than I am putting through it it is just a little odd that it is happening
I have tried all the suggestions I will see what happens in a couple of days
It sucks because my tank will overflow in the display but my sump will not overflow

 

[Rover88]

I use a durso overflow
The level changes over a couple of days
The durso can handle way more gph than I am putting through it it is just a little odd that it is happening
I have tried all the suggestions I will see what happens in a couple of days
It sucks because my tank will overflow in the display but my sump will not overflow

Something has to be happening to restrict the flow. Its physics, it can't /not/ be happening. Somewhere, something is restricting the flow more then it used to, or your pump is pushing more then it used to and the durso can't keep up. Water can't get up there otherwise!

My sump return pump area doesn't have enough water in it to overflow the tank; I designed the water level in that area to cause the pump to run 'dry' and cease pumping water before it'll put water on the floor. Its not a perfect fix, but its my last ditch avoid-a-flood protection. Ideally I'll never get there, but just in case...

Better to damage a pump then soak my apartment, in my mind.

 

[Shamous113]

sounds like the pump is slowly increasing its speed after you set the flow on your drains. What pump are you running? how old is it? when was the last time you took it apart and cleaned it? also check for damage and fit on the impeller, shaft and bushings.

 

[bighead]

I run a Jaebo Dc 1200 for over a year I clean it pretty often once a month or do

 

[Shamous113]

I run a Jaebo Dc 1200 for over a year I clean it pretty often once a month or do

It could be a symptom of the power supply or controller dying, do you have a spare on hand? I know on the DCT1500 they increased the size of the power supply from 5amp to 6amp just after they came out. they were cooking power supplies.

 

[crawlerman]

Seems obvious, but did you clean out the teeth (for lack of a better term) on the overflow?

 

[hkgar]

Look, quite simply if the DT level is going up and the sump level down than more water is entering the DT than leaving the DT.

It's your job to figure out why. If your drain can, as you said, handle more flow, than if someone came and poured 20 gallons into your DT your sump would overflow, not the DT

 

[ca1ore]

Seems obvious, but did you clean out the teeth (for lack of a better term) on the overflow?

Display level gradually rose in my last tank because coralline algae was slowly narrowing the slots in the weir.