![]() ![]() For example, for a 50-gallon tank look for a pump rated at least 250-500 GPH. Calculate Your Recommended Flow Rateįor reef aquariums, the general rule among hobbyists is to find a pump that can deliver at least 5x to 10x the tank's total water volume per hour. You need to account for this loss of flow when choosing your return pump. Once you connect the pump to tubing or PVC pipe, it creates pressure (head pressure) and the flow rate will be reduced. It’s the industry standard for measuring the power of a particular pump, but it doesn’t tell the whole story. Think of it as the flow rate with the pump sitting in a bucket of water. The advertised GPH rating is the maximum flow rate for the pump which is the amount of water the pump can move when it isn’t connected to anything. Water pumps are rated in gallons per hour or GPH for short. With just a few simple calculations you can be confident your making the right choice.Īdd to Cart Notify Me When In-Stock Gallons Per Hour (GPH) In either case, the return pump is creating a constant, circular flow of water through the display aquarium and filtration system exactly why we call it "the heart" of your aquarium.Īlthough it might seem a little confusing at first, choosing an appropriately sized return pump is pretty easy. In an All-In-One style tank, the return pump moves water through the back filtration chambers and into the display. In the situation where you have a sump located down below the tank, your return pump moves water from the sump back up into the aquarium. While Powerheads are responsible for internal flow and creating currents inside the display, a return pump is what moves water through the filtration system. ![]() With coral, that flow delivers food and critical nutrients as well as washes away waste.Īquarists create water flow in their aquariums using powerheads and a return pump. For fish, proper flow ensures gas exchange and plenty of oxygen and helps to move waste and nutrients into the filtration system for removal. Water flow plays a critical role in the health of your saltwater aquarium, especially if you are keeping corals.
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