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Old 10-16-2009, 01:16 AM
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You quoted the article to back up your statement, I am arguing no more than you are.

I have always promoted low flow, and have used syphon systems for many years, I have never advocated a Durso, a Durso is for people that have incorrectly sized their drains.

Please refrain from accusing me of making this a personal issue.
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Old 10-16-2009, 01:32 AM
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Originally Posted by Mr OM View Post
You quoted the article to back up your statement, I am arguing no more than you are.

I have always promoted low flow, and have used syphon systems for many years, I have never advocated a Durso, a Durso is for people that have incorrectly sized their drains.

Please refrain from accusing me of making this a personal issue.
Perhaps you could read things properly before making your arguments, if you did you would realize that quote had very little to do with my points. It was only intended to show that 10x is a general rule of thumb for total flow, nothing more.
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Old 10-16-2009, 01:37 AM
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Perhaps you could read things properly before making your arguments, if you did you would realize that quote had very little to do with my points. It was only intended to show that 10x is a general rule of thumb for total flow, nothing more.
What has 10x total flow got to do with 10x sump rates? they ask for 3x sump rates and 10x total flow, not your 10x sump recommendation, trust me I read it properly, I think you were the one that used it to prove your point, but had not read it properly.
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Old 10-16-2009, 01:55 AM
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Originally Posted by Mr OM View Post
What has 10x total flow got to do with 10x sump rates? they ask for 3x sump rates and 10x total flow, not your 10x sump recommendation, trust me I read it properly, I think you were the one that used it to prove your point, but had not read it properly.
Interesting, did you notice that repeatably mentioned the 10x flow is general guideline tank flow but obviously some tanks require more. I just think it's easier to run 10x through the sump and then add extra if it's needed with power heads. I also mentioned time after time that I'm not arguing for 10x sump turnover nor am I recommending it. My point has always been that people have options, and just because some choose to produce there tank flow differently than others doesn't mean they are wrong.

I never took a side and said what was wrong and what was right. Simply put, people think differently and have different priorities, low flow or high flow, it makes little difference.
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Old 10-16-2009, 02:08 AM
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I never took a side and said what was wrong and what was right. Simply put, people think differently and have different priorities, low flow or high flow, it makes little difference.
Unfortunately if you had made this statement 50 posts ago we wouldn't be still posting back and forth, the fact is in general you feel 10x is the acceptable rate and I believe the slower rate to be better and I will explain.
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Old 10-16-2009, 02:18 AM
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Unfortunately if you had made this statement 50 posts ago we wouldn't be still posting back and forth, the fact is in general you feel 10x is the acceptable rate and I believe the slower rate to be better and I will explain.
Really? I'm pretty sure I made it clear from the start, even in the thread this discussion started in.....

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Like previously stated it's a matter of preference, both low and high flow have there advantages but it's a preference not a requirement. There are obviously limits but the range is large.
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I never said low flow was a bad thing but rather advantages exist for both so it comes down to personal preference.
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I’m not looking for math or sources to back up claims, mainly because I don’t care that much but also because I’m not disagreeing. I know many people just love to argue but that’s not my goal here. Honestly you can use pretty much whatever flow you want for a sump turnover and my argument is that it doesn’t matter. Yes lower turnover rates are quieter and for this reason more common because higher flow rates require more experience to achieve quieter results. In addition lower flow rates require cheaper internal pumps; high flow pumps are more expensive and for the most part louder.

I’ve said it over and over again and feel now that I’m really beating it too death but a flow rate of 3-5x will produce success and so will 10-15x there really isn’t much of a difference. Skimmers are independent and other parts of the sump filtration need to be designed for a certain flow rate. What that flow rate is, is completely up to the owner’s or maintainer’s preference and there is no real scientific evidence to support either option.
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Old 10-16-2009, 03:04 AM
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Quote:
Originally Posted by Mr OM View Post
the fact is in general you feel 10x is the acceptable rate and I believe the slower rate to be better and I will explain.

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Really? I'm pretty sure I made it clear from the start, even in the thread this discussion started in.....


Are you sure that's what you said? and that you were not biased for 10x sump returns?


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Originally Posted by sphelps
The 10X turn over recommendation is based on tank/sump flow and not skimmer flow

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Originally Posted by sphelps
Basically I think it's fairly obvious that more return flow means more filtration.

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Originally Posted by sphelps
higher return flow will not only keep particles and matter suspended but it will also filter them out faster.

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Originally Posted by sphelps
I prefer to practice around 10x turnover with additional in tank flow if required

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Originally Posted by sphelps
My way of thinking is to start with the minimum requirement, which I believe is about 10x, then supplement more if needed and of course only if it’s practical. Remember I’m not arguing the fact that 3-5x won’t work but rather than running 10x will also work, personally I believe it may work slightly better but that’s not my main argument.

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Originally Posted by sphelps
One more reason I see more being better is matching the flow doesn't actually make sense if you look at the numbers. My skimmer for example flows 4000L/h and it's rated for tanks up to 3000L, hmmm so the "required" flow results in a turn over of 1.3

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I believe it's actually just over 10x
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