2 pumps vs 1

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BichirKing

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Jun 19, 2018
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so I have a jebao dcp6500 and its running at wide open. I still have what I feel is a lot of flow left in my 1.5" bean animal overflow pipe to my sump(gate valve is about 50% open). I was thinking of getting a bigger pump but read on here a few people talking about running 2 pumps. wouldn't it flood my sump and garage if I had one of the pumps fail? I guess I don't see how a larger pump turned down would recognize it needs to turn itself up to compensate for the failed pump.
 
The pump doesnt have to compensate for lost flow. Thats the beauty with sumps. What goes up in the tank flows back to the sump. If one pump fails the flow up in the tanks drops and so does the flow bsck to the sump. You should always have enough room in the sump for water that overflows from the tank. If set up correct it is foolproof.
 
Agreed if one fails it would drop the flow and not cause a flood. Being adjustable you can run two pumps on lower settings and not increase gph by much or increase it by allot. I chose to run two for the redundancy and figured running one almost maxed out would put more strain on the pump and possibly shorten its life span.


The only way your tank would flood is if gph increased passed what your e drains could handle
 
I was just debating this very thing. I decided to go the dual route. I won't always be around to catch it so if my main filtration shuts off that would be a bad deal. When you have 2 your flow just gets cut in half unless your unlucky enough to have both fail at the same time.

Your sump will equalize so no worry of flooding unless your sump is undersized and can't handle the extra water from shutoff.

It is not all about flow either though. You don't want your sump to be a class 5 rapids just because your drains can handle it. If you have good results now plumb in a twin pump then dial them both back 50%.
 
B BichirKing


As long as you keep the water level low enough to account for the back flow of your sump when the pumps are off your fine

1363914

The two pieces of blue tap on the left hand side mark where i need to stop filling the tank during wc's. As long as i dont refill passed the lower marker my sump wont flood. With the system off the water level rises to the higher marker
 
B BichirKing


As long as you keep the water level low enough to account for the back flow of your sump when the pumps are off your fine

View attachment 1363914

The two pieces of blue tap on the left hand side mark where i need to stop filling the tank during wc's. As long as i dont refill passed the lower marker my sump wont flood. With the system off the water level rises to the higher marker

You have for that baby maxed out lol def took full advantage of the extra water vol
 
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ok I see just couldn't picture it. I guess i'll get another dcp-6500. thanks everyone!


Is not a must but a little redundancy wont kill.

Start with a water level that covers the bio and pumps. Add a little water, mark the water level then shut the system off, again mark the water level. Now you have both and on/off water line.... continue adding water and marking the on/off levels until you are comfortable with the amount of water in the sump.
 
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Start with a water level that covers the bio and pumps. Add a little water, mark the water level then shut the system off, again mark the water level. Now you have both and on/off water line.... continue adding water and marking the on/off levels until you are comfortable with the amount of water in the sump.
already done! I have had several sumps but only 1 pump.
 
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