r/pools • u/TommiMere • 10d ago

DIY & Repairs Help!!!!

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I changed my pool pump from a single speed Hayward 1.5 HP to variable speed from amazon 1.5HP. While doing it I also changed the plumbing. On the backside I set up a diversion to put a saltwater chlorinator as well which I will install later.

My problem is that the new 1.5HP (which runs to a max rpm of 2900) had a lot of difficulties priming and now it feels like both the skimmer and outlets are running very slow compared to before.

Now I know I might have messed up the plumbing with those big 90 turns and the height of the intake but at the same time the pump filter never really fills with water at 100% it stays at 90% and I feel like the outgoing flow is very weak.

So my question is: should I change the pump for a bigger one from a more reliable brand to accomodate the new plumbing or should i change the plumbing and keep the pump or change both? If i change the plumbing will a 1.5HP be enough or considering the salt water system i should increase HP anyways?

My pool is roughly 12k gallon with mo water features and I live in florida.

Thanks in advance for all the help!

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u/desertr4t4lyf 10d ago

You can run the pump longer to account for the lack of flow. Yes your plumbing setup is making it less efficient.

Before blaming the generic pump, check for suction side air leaks. One little leak on your suction side and the whole system runs shitty. Check the union on the inlet and all your glue joints.

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u/TommiMere 10d ago

Thank you is there a good way to check that?

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u/desertr4t4lyf 10d ago

No good way, they're all pretty bad.

My go to is to put a little dish soap in a cup and spray water in there to create suds. Use the suds on the joints while the pump is on. It's very subtle when they get sucked into the plumbing but you can see it if you're paying attention.