ATO issue.... maybe

[outacontrol]

It is called gravity and the pump is starting a siphon. The reservoir needs to be lower than the output, or use a check valve, or use a different plumbing method.
I thought that you were putting your reservoir in the basement?

[paddyob]

Originally Posted by outacontrol

It is called gravity and the pump is starting a siphon. The reservoir needs to be lower than the output, or use a check valve, or use a different plumbing method.
I thought that you were putting your reservoir in the basement?

Yes it will be in the basement. But I do not have time to take that project on right now.

It's not back siphoning so I don't see a check valve being of any use.



I cant see everybody having their res lower than the sump. I Would bet
Most people have them at the same level, or are using a tall standing res.

[lee9]

Yes, I also run my top off line directly into my display tank which is higher than my resevoir because I have no sump on my RSM 250. If your pump is adjustable reducing the flow may be worth a try.

[sphelps]

Why not just pump into the overflow box instead of the sump?

[paddyob]

Originally Posted by sphelps

Why not just pump into the overflow box instead of the sump?

I guess I'll try that. Just worry about the delay to drain, make it's way to the sensors and still over fill.

Thanks people.

[Nate]

Pump output must be above the highest level the water can be in the resevoir. So water may have to fall 2 feet into sump.

What I usually do on these installs is plumb in a much larger line, like 1 inch pvc from the bottom of the stand to just above my water level in the sump. And then just run my pump line into the top of the PVC (close to the stand) and let it run through there down into the sump so you don't have water free falling 2 feet. Due to the line being bigger, that helps with your syphon stop.

Nate

[paddyob]

Well grey conduit pipe and two elbows laying around.

Cut.

Plumbing cement tomorrow and and then I'll see how it goes.

Thanks for the input.