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Old 07-25-2013, 02:27 PM   #31
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If the issue is efficiency it doesn't matter if it's in line or what have you, having 2 units is not efficient as having 1 unit to do the same job.
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Old 07-25-2013, 02:41 PM   #32
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How can 2 not as efficient as 1 ? 2 is double 1 so it must perform better
I would say the 2 skimmers do perform better but better enough to justify the extra £ not sure !
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Old 07-25-2013, 02:50 PM   #33
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It's about total air flow as mentioned earlier. If the pumps don't interfere with each other, it should work fine having multiple skimmers. Maybe it's not as efficient as one big one, or maybe it's more efficient as multiple skimmers can be placed a different areas of the flow and could perhaps pick up more than a single one.

But both ideas have merit, but not enough for you to go blow a lot of money.
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Old 07-25-2013, 03:26 PM   #34
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The question is not which one works better or it would work or not. Efficient means the over all performance that is with less maintenance, less power losses, less head aches and etc. Of course having 2 skimmers may have better skimming but they may not be consuming less or equal power as the single bigger unit. Assuming all units are on their optimum settings, the time dwell of bubbles depends on the pump capacity. With 2 lesser capacity pumps, each can only skim as much.
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Old 07-25-2013, 03:59 PM   #35
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I will have to go along with Jeff. Mr. X your setup is somewhat unique in that you have 2 large sumps each with a skimmer so having 2 skimmers make sense and works but to me having two skimmers side by side in one sump isn't the best idea because the second skimmer isn't working as well as if it were alone. It is getting leftover organics that the first skimmer missed the first time but would eventually get as more water is circulated to it. Since skimmers are not able to get 100% of all water at one time it relys on the water the is circulated to it via the return pump flow and its own pump.

Both skimmers will have skimmate but the overall performance isn't any better than one bigger skimmer. But you will have twice the amount of work.
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Old 07-25-2013, 04:04 PM   #36
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I don't remember anyone saying two was more efficient than one. But one skimmer is half the work of maintaining than having two. Been there done that. Something to be said about redundancy. If one skimmer fails you have a backup on line. In my opinion it doesn't really matter much. Like having two heaters or one big one.
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Old 07-25-2013, 04:05 PM   #37
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I agree but if the second skimmer is free ! Why not let it take out what it can ?
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Old 07-25-2013, 04:05 PM   #38
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Quote:
Originally Posted by Oliverb View Post
I agree but if the second skimmer is free ! Why not let it take out what it can ?
I can't argue with that.
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Old 07-25-2013, 04:09 PM   #39
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Let me get this right skimmer 1 is rated 500lts skimmer 2 is rated 1500lts that is the power of2000lts ! Isn't that better ?
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Old 07-25-2013, 04:19 PM   #40
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Quote:
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I agree but if the second skimmer is free ! Why not let it take out what it can ?
I also agree if your electric bill is also free and you don't mind spending twice as much time cleaning them out.
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