That's helpful. Thanks Brett. I was consering doing a mesh mod on this impeller, but heard they can be a pain for maintenance. Even if I do the mesh mod though, can i just drill the intake and add an air hose with a valve on it? or does the intake have to be a certain shape in order to allow appropriate flow rates? I've tried searching and looking at different skimmers and it seems as though the water intake to the pump doesn't have to be a certain shape and I can easily make an intake if i drill the attachment and use a plastic threaded fitting for a nipple for the air hose. I've looked at the needlewheel impeller from this Genx 4100 pump and the magnet is quite a bit smaller, so not really an option.
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