I've had the water blaster HY-5000 for over 6 months now. It's very quite and breaks down very easily for cleaning. Water blasters can be ran internal or exteral for more options. They pumps are very energy efficient and have a huge output for the wattage. I recently got the HY-3000 for a second pump to my frag tank. Smaller but powerful. I highly recommend these pumps for the price, qualit, and warranty. They also make a bubble blaster series for skimmers. Both models where designed after the red dragon pumps. They feature the silicone nitride shfts and bearings so calcium dosn't adhere. They also feature a smart circuit board that will shut the pump off if it detects a problem.