Can laguna max flo pumps be used externally?

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SandNukka15

SandNukka15

Goliath Tigerfish
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Nov 18, 2010
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Towanda PA
I have a spare lagun max flo 2400 pump I wanted to use to help speed up water changes in my 180 gallon... I'd like to run a hose from the inlet of the pump into the tank and a hose on the outlet of the pump to drain. I'd like to perform water changes without actually dropping the pump in the tank to suck water out...

Can these pumps be used externally?
 
SandNukka15 said:
I have a spare lagun max flo 2400 pump I wanted to use to help speed up water changes in my 180 gallon... I'd like to run a hose from the inlet of the pump into the tank and a hose on the outlet of the pump to drain. I'd like to perform water changes without actually dropping the pump in the tank to suck water out...

Can these pumps be used externally?
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I've done that with their powerjets with no issues. Other than I didn't want to pay $100 for enough 40mm or whatever size hose for the intake to make it practical vs just throwing it in the tank.
 
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Id be conserend about causing damage to the pump running it dry like that for start up. Why go though the hassle Just drop it in the tank.
 
TheWolfman said:
Id be conserend about causing damage to the pump running it dry like that for start up. Why go though the hassle Just drop it in the tank.
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Why would you run it dry? Suck on it, whatever to get the water siphoning through it and you're good. It's not like there's any point running it dry, it's not going to suck air to get started running.
 
Appears to be only submersible since I didn't see a separate intake port on Laguna's website.
 
deeda said:
Appears to be only submersible since I didn't see a separate intake port on Laguna's website.
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Laguna-Max-Flo-Waterfall-Filter-Pumps.jpg


They're a pretty conventional pump in a big funny looking strainer.
 
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Laguna instructions in the link. Just not sure how secure a connection will be on the intake side for hooking up a hose even with a hose clamp, might have to be careful not to crush the fitting when tightening the clamp.
 
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It's hard to explain why I'd like to use it this way. I could gravity syphon with the 1 inch hose but it would take a lot longer than if I were to try to use it to pump water out internally or externally.... I believe a 1 inch ID hose is only 600 gph gravity fed as opposed to around the 2400gph I'd get if the pump was being used.


Basically I drilled a 1 inch hole in my living room floor so I can use a 1 inch ID hose to drain water into the basement which has a drain right under the tank basically... I would also have my stock tank in the basement right next to the drain and use the same 1 inch ID hosing to pump aged water back into the tank.

Does that make sense?
 
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TwoHedWlf said:
Why would you run it dry? Suck on it, whatever to get the water siphoning through it and you're good. It's not like there's any point running it dry, it's not going to suck air to get started running.
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That seems like a lot of extra work every time to prime it, to each there own I guess. You could set up a permanent pvc syphon with a ball valve and drain it to your basement or directly to your external pump. Just a suggestion.
 
TheWolfman said:
That seems like a lot of extra work every time to prime it, to each there own I guess. You could set up a permanent pvc syphon with a ball valve and drain it to your basement or directly to your external pump. Just a suggestion.
Click to expand...

I'm using the 1 inch tubing for both draining and then refilling the tank
 
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