Recent content by Pooldesigner1

A 3HP Intelliflo pumps approx. 130 GPM at 60 TDH. The velocity in suction pipe should not exceed 8 FPS and in the return pipe 10 FPS. 130 GPM in a 2" pipe is 13.28 FPS.. in a 1-1/2" pipe it's 23.6 FPS.. As someone who designs and engineers swimming pools for a living and this is what I do all...

What pump did you install? Did you replace it with the same HP as before? The new pump may be too powerful for the size piping and filter you have.

Sizing it important. Most older pools are built with smaller diameter pipe. A 3HP pump in most cases if overkill. A 3" suction line is required for the flow of water it produces. Some pools I have seen have a 1-1/4" or 1-1/2" suction line and as little as 1" return line - too small for the flow.

Pentair makes a 1hp VS pump. Intelliflo-i. No need for a 3hp pump that you will be running at a lower speed to save energy. Stay with Pentair Filter - the bigger the better and a Pentair Intellichlor IC-40 (or 60) . If you buy 3 or more components from Pentair they will double your warranty.

It is not your pump... the jets are clogged most likely. Remove the jet nozzle, blow it out or replace with new.

Hi everyone. I am new to the site. Not a pool owner, but a pool professional. Have been designing and engineering swimming pools for almost 20 yrs. I'm here to learn from others, as we never stop learning, and also help answer questions if I may.

Bare concrete is not waterproof. Leaking out "quite substantially" is not through concrete however. While the concrete is porous it would be seeping out. Did they pour the floor first and than walls? Did they use a waterstop at the cold joint? That's a possible leak. Also, any fittings.. main...