the thing is the pump doesnt touch the bottom i put a styrofoam and under that theres the japanese grade a filter media also. i think i should just change the pump to a different one but i dont know much about pumps and sump filter. which pump brand/model is similar to the one i have rio 32hf. right now i get 1300gph so around 8x the return i want one similar to the rio 32hf but dead silent if possible stronger & dead silent and very quiet since its in my room.