Pump decision help

[eklikewhoa]

I have a ball valve on the overflow

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I would not limit the overflow. There is no need if you go with the appropriate return pump and the overflow will only flow what is pump through it, having the ball valve on the drain pipe would only lead to problems.

[jwh0818]

I would not limit the overflow. There is no need if you go with the appropriate return pump and the overflow will only flow what is pump through it, having the ball valve on the drain pipe would only lead to problems.

Sorry I'm new to the overflow stuff. How would it cause problems. Its 1" on the inside as well

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[eklikewhoa]

The drain will only dump what is pump through it so limiting it is not necessary, having the ball valve on there would constrict the flow and add a restriction where build up could form and further limit the drain causing the tank to overflow since the return pump does not know that the drain is limited which resorts to all the water in the sump being pumped into the display and then spilling over the top.

What benefit to you get from having a valve on the drain? It's just something that doesn't need to be there and you benefit little to none from it.

[eklikewhoa]

I see no logical reason for it but that's just my personal opinion.

[eklikewhoa]

Just noticed this is posted in the Lounge, we have an equipment sub-forum where you could have put this thread.

[jwh0818]

The drain will only dump what is pump through it so limiting it is not necessary, having the ball valve on there would constrict the flow and add a restriction where build up could form and further limit the drain causing the tank to overflow since the return pump does not know that the drain is limited which resorts to all the water in the sump being pumped into the display and then spilling over the top.

What benefit to you get from having a valve on the drain? It's just something that doesn't need to be there and you benefit little to none from it.

I put it as a safety precaution to shut the over flow off

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[mgarrido]

I see no logical reason for it but that's just my personal opinion.

Agree with that. That valve maybe should be used for maintenace on the overflow or sump.

[jwh0818]

Exactly but I see no harm in it being there

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[mgarrido]

Exactly but I see no harm in it being there

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Just leave it fully open and no problem

[jwh0818]

Just leave it fully open and no problem

Yes no doubt. But to the main question, will the quiet one 4000 pump work. Its rated for 1000gph

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[eklikewhoa]

Ok, I see the validity of it now, make sure it stays wide open when not in use.

As for the pump I would go with something less with the overflow you have unless you plan on valving it down but I think running a smaller pump would be better overall. You can add circulation via powerheads or even assist the sump set up with a canister filter.

[mgarrido]

i would not use that pump without a T on the return line and dump some water back into the sump

[jwh0818]

I'm gonna have a ball.valve on the return as well though to lower the gph. Will that work. I figure after all the pipes for the return its only gonna be about 700 gph

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[jwh0818]

i would not use that pump without a T on the return line and dump some water back into the sump

I don't see a problem with the T. That's actually a good idea

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[eklikewhoa]

I don't see a problem with the T. That's actually a good idea

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It would allow the pump to run closer to full potential and cause less restraint on the pump, also you could have it break the water surface so the sump doesn't build up a protein layer and further aerate the water.