![]() Theoretically this is still slightly low as it is only 2.2 the tank size, but it works for my hugely overcrowded / overstocked tank. This gives a high current for the fish to play in, but also pushes the water in a specific direction to the other side of the tank.Īll in all from my 2*1200 L/h canister filters I have an effective flowrate of (450+550)l/h =1000l/h which is about 2x the tank size. Outputs of both filters are the far right of the tank both in the same place and both facing down at an angle of 30degrees. The skimmer helps keep the water surface clean to maximise o2 and CO2 exchange. via a fresh water skimmer, which takes half the water from the surface and the other half from halfway down the tank. I have to clean the prefilter every time I do a water change (every two weeks) as it gets clogged up with slime from the bottom of the tank.Ģ. via a prefilter sucking water from the bottom of the tank. I measured the amount of water flowing for a period of two weeks and divided the number by 14days*24 hrs to get the flow rate.ġ. I used an old water meter (used for measuring water consumption into the house) and connected it to the outlet of each of my filter. I understand where you are coming from as I too had my doubts as to water flow, so this is what I did. I have a 450l tank with two 1200 l/hr filters and third works fine for my heavily over stocked tank and water changes once every two weeks. I think you have a good amount of filters (looking at the throughput).
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