got my package today it was kinda a pain setting it up since i had to drain the sump but now that its all done it was totally worth it... give me a few days to play with it and ill let u know how i like it
yes they do make hang on skimmers. But hang on skimmers can be put as "in sump" skimmers. Mine is a hang on but now in sump, and it's better like this, the pump needs less power to lift the water.