Looking for some advice from some experienced sump users. I want to do away with the two canisters on my 500gallon tank. Ive already set up a diy 75gallon wet dry sump. Its only being powered by a cheap hardware pond pump currently. The tanks drilled with 6 1" bulkheads and no weirs or overflows if that makes sense. 4 on the back and 1 each end. I currently have two draining into the sump full siphon dialled back with gate valves. Im unsure if its the cheap pump or the drains but the water level forever goes up and down it will randomly run itself dry. I wont easily be able to find anything bigger then a 75gallon tank to use as a sump. Im thinking two 75 gallon sumps with jebao 12000 pumps in each. What I want to know is how you would go about setting it all up ive searched and cant seem to find anything simmilar.