Waterfall pump problem


Old 08-10-19, 05:02 PM
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Waterfall pump problem

Hello guys,
Hope someone can help me
I have a waterfall as shown above
Recently I relocated the pump to a new location.The water drains into reservoir from the last waterfall chamber
Initially I thought the level would level with the last waterfall chamber
The water level is same in both last chambers when the pump is off however when the pump is switched on the level drops to Position A
If I add water to pump chamber the level doesnít rise but the level of last waterfall chamber rises
because of this the pump only has about 3 inches of water
The inlet total is 4 inches and outlet 3 inches
There is no connection between them but just canít figure it out

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Last edited by PJmax; 08-10-19 at 09:44 PM. Reason: enlarged/enhanced/labled picture
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Old 08-10-19, 09:51 PM
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Welcome to the forums.

I increased the visibility and labeled the chambers for sake of discussion.

Did you add the entire chamber 4 ?

Chambers 3 and 4 are interconnected. They will always become level as water seeks its own level.
If the pump removes more water from chamber 4 then it gets from chamber 3.... the level in 4 will go down.

The inlet total is 4 inches and outlet 3 inches
There is no connection between them but just can’t figure it out
Not sure what this means.
Inlet and outlet between chamber 3 and chamber 4 ?
They certainly look connected.
Old 08-11-19, 04:08 AM
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It sounds like you are somehow restricting the flow into the pump chamber. However the water gets to the pump chamber it isn't big enough.

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