![]() ![]() Mechanically the gravel acts as a filter itself. ![]() Methods of Filtration in an Undergravel Filter When an air pump has used the oxygen in the water increases, on the other hand, a powerhead or water pump is likely to move the water faster than normal and increases the number of gallons per hour. The cycle flow is like this no matter what is used to move the water. Read more about Penn Plax cascade 1000 canister filter For a larger base say 16×30 inch you a powerhead that pumps 200-300 gallons per hour will be required. 60-90 GPH per square foot is an ideal rate for the powerhead installed. The square foot of the Aquarium determines the powerhead you require to use. Not very different from how the air pump works. The undergravel filters the water an by an effect and then draws it to the tube through the gravel down to the bottom of the tank. All air pumps tell you the amount or number of gallons that they are rated for so be extremely sure that you buy an air pump that is adequate for your aquarium. Use a check valve if you choose this route because it proves to be more efficient and helpful. ![]() The water is then pushed out with the help of air bubbles and due to this effect, the water goes through the undergravel filter to the bottom of the tank. There are 2 methods availableĪn air pump is used in a fish tank so that the air is pushed up the tube and the air bubbles can rise up to the top of the tube. The plates at the bottom are connected by filter tubes and then rise up where the aquarium water is at the top and thereafter returns to the tank. This order helps the water flow and thus it can flow freely under the substrate. On top of the plate comes the gravel substrate. Depending on the size of the tanker or aquarium you might have to put a plate at the bottom. The majority substance or residue resides beneath the substrate and thus it is only sensible when you put up the undergravel filter while setting up the aquarium for the very first time. ![]()
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