how many times a hour should the water go through the sump?
just wondering how many times an hour should the tank water go through the sump? 1? 5? 10?
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I would aim for about 3-5x per hour.
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There is really no set amount, slow or fast both work the same. Mine is set at about 800GPH swap over or almost 5 complete tank volumes.
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Actually skimmers work best at a 1 times turnover, that's how they are designed, beyond that they become less efficient. |
I was waiting for someone to make this argument, please explain to me why that would be?
If a skimmer draws in water @ a set rate which is completely unrelated to the water movement around it then why would slowing that water down increase its efficiency? Levi |
It's quite simple, if you run a lower turnover rate the water(containing surfactants) coming from the overflow box is concentrated rather than being 10% crap and 90% water in a 10x rate, the skimmer does a far more effective job with a concentrated solution than a diluted one.
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By that logic, the same amount of water would pass through the skimmer would it not?
Theoretically: 1gph=100% skimmed 10gph= 10%/gal I dont really have a preference. As long as water gets skimmed its a win situation. |
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That being said, there is no actual way to test out these theories as a skimmer pulls out skim-mate in both situations. This test would be almost impossible because everyones tank (or say a "test tank") would differ from one another so getting a control would be practically impossible. I am not saying your opinion is wrong/invalid , I am just saying that in my opinion the flow rate through your sump isn't a big thing to lose sleep on. |
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