Overflow box and Pump

[Trustyworm]

I am planning on getting an Eshopps AEO11005 Overflow Boxes Pf-800. I wanted to know what type of return pump I need and what gph. I have a 75 gallon aqueon tank.

 

[redfishbluefish]

The "800" in it's name is the maximum gph the overflow can handle. So you want a pump (minus head loss) that is less than 800 gph OR at least controllable so you can turn it down. If you wish to go with an AC pump, Danner MAG pumps are bulletproof and last forever. A MAG 7 would work just fine. That said, my preference would be a DC controllable pump, and you have a number of choices. I personally would be looking at Jebao 4000 or 5000. Note these pump designations are in liters per hour, so that calculates out to 1057 and 1321 gph, respectively. Again, these pumps are controllable so that's why you pick one that is greater than what the overflow can handle and simply turn them down. This way the pump isn't running flat out....I want to think the pump lasts longer by running at a slower speed.

 

[Trustyworm]

The "800" in it's name is the maximum gph the overflow can handle. So you want a pump (minus head loss) that is less than 800 gph OR at least controllable so you can turn it down. If you wish to go with an AC pump, Danner MAG pumps are bulletproof and last forever. A MAG 7 would work just fine. That said, my preference would be a DC controllable pump, and you have a number of choices. I personally would be looking at Jebao 4000 or 5000. Note these pump designations are in liters per hour, so that calculates out to 1057 and 1321 gph, respectively. Again, these pumps are controllable so that's why you pick one that is greater than what the overflow can handle and simply turn them down. This way the pump isn't running flat out....I want to think the pump lasts longer by running at a slower speed.

For the jebao 4000 pump, how big does the tubing have to be. I can't seem to find that information.

 

[jdpeters]

The "800" in it's name is the maximum gph the overflow can handle. So you want a pump (minus head loss) that is less than 800 gph OR at least controllable so you can turn it down. If you wish to go with an AC pump, Danner MAG pumps are bulletproof and last forever. A MAG 7 would work just fine. That said, my preference would be a DC controllable pump, and you have a number of choices. I personally would be looking at Jebao 4000 or 5000. Note these pump designations are in liters per hour, so that calculates out to 1057 and 1321 gph, respectively. Again, these pumps are controllable so that's why you pick one that is greater than what the overflow can handle and simply turn them down. This way the pump isn't running flat out....I want to think the pump lasts longer by running at a slower speed.

If you don’t have a controllable return pump can you just throttle it back with a gate valve or does that damage the pump? Mostly asking out of curiosity. I’m planning out plumbing right now and need to over shoot it a little bit in order to account for a reactor or two and possibly a UV down the line

 

[FUNGI]

If you don’t have a controllable return pump can you just throttle it back with a gate valve or does that damage the pump? Mostly asking out of curiosity. I’m planning out plumbing right now and need to over shoot it a little bit in order to account for a reactor or two and possibly a UV down the line

Won't damage the pump....

 

[redfishbluefish]

If you don’t have a controllable return pump can you just throttle it back with a gate valve or does that damage the pump? Mostly asking out of curiosity. I’m planning out plumbing right now and need to over shoot it a little bit in order to account for a reactor or two and possibly a UV down the line

As @FUNGI stated, not a problem throttling back the pump. Just to be clear, the valve goes on the return side of the pump, with the inlet side wide open.

 

[FUNGI]

^what he said.....

 

[jdpeters]

As @FUNGI stated, not a problem throttling back the pump. Just to be clear, the valve goes on the return side of the pump, with the inlet side wide open.

That makes sense and thank you for clarifying. Just to be clear, I can use a gate valve in lieu of a controllable pump? But as I’m asking that out loud it probably makes the most sense to just purchase a pump that is controllable.

 

[redfishbluefish]

For years I had a MAG 9.5 valved down as my return.

 

[FUNGI]

If you use the valve, just make sure your pump has enough head.....

 

[ScottJ]

The Danner MAG pumps are rock solid. Highly recommended.