eshopps 300

Hey guys I have a eshopps 300 hang on back overflow and I like it. I just cant seem to get the black box in the tank quiet. Is there anything I can do to quiet down the water trickling into the box? I fixed the gurgling noise from the bulk head on the bottom just cant get it quiet in the...

So I bought the eshopps 300 and was wondering what size pump is best. Should I get like a 290 gph or what? Thanks

Good day all, i am currently finishing the final steps for my sump and the last thing i have left is the overflow plumbing. I am going to use the Eshopps PF 300 and i am having trouble figuring out how to plumb it. The eshopps has a 1'' bulk head and here in Japan they do not carry a 1'' pvc...