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Old 03-16-2009, 04:45 PM   #11
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I understand your point sincerely and I agree with you entirely. Physics is physics and that can't be changed. So, I guess my mission is to come as close to 600GPH without going over. I read the specs on my tank and overflow and got this information. The overflow is rated at 600GPH (utilizing a 2,400GPH rated pump at a 5 foot head)

With that said, I attempted to use the calculator with the Quiet One 3000 pump. However, I really don't understand it. I know it may be a pain in the butt, however could someone please break things down for me on how to proper use that calculator? I want to make sure that I'm doing things right. I don't want to overload my system while trying to maximize it's efficiency.

I guess the only parts of the calculator that I'm a little confused about are as follows:

1. Vertical Length
2. Horizontal Length
3. Pipe Diameter (My drain pipe is larger than my return pipe)

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Old 03-16-2009, 05:10 PM   #12
Thanx but no.....

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is this your pump ? Quiet One 2200 Water Pump: Aquarium Supplies - Aqua Buys

If so, it's rated at only 581 gph before head loss.

I still think a Mag9 does you well. And they are great pumps.

Vertical and horizontal length all act against the pump pushing the water. vertical because the pump is pushing water up against gravity, horizontal because of friction. Diameter matters because much like the drain there is a physical maximum that can be delivered based on the diameter. Elbows/ unions also count for head loss.

Think about blowing water through a straw or hose. Is it easier if the hose is short or longer? If it's str8 across or str8 up? If there are a bunch of turns or completely str8? If the hose is bigger or smaller?

Same basic concept.

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Old 03-16-2009, 06:13 PM   #13
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CaptA is right on. I agree with everything he said.
I will also add the recommend flow rate thru a sump is 5-10x the tanks volume. Assuming you have live rock and sand in the tank, your total capacity (depending on how much water is in the sump) is maybe 70 gal. You only want between 350-700gph max thru your sump. More flow makes the sump less efficient if you have macro or chemical media down there.
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Old 03-16-2009, 07:51 PM   #14
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Thank "ccCapt" my goal is to try to max my flow rate out right at 600GPH. I'm having a hard time finding the correct calculations though. How can I calculate the vertical and horizontal lengths when I'm using vinyl tubing? That's next to impossible unless you guys can clue me in on some trick to doing so.

I will also, look into that mag9 water pump. thanks "Ahab"
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Old 03-16-2009, 08:31 PM   #15
Thanx but no.....

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Over size and reduce the flow thru a valve on the return, would be my suggestion. Sooo.. size you pump at 0 and reduce thru the value.

I will tell you that IMO it reduces the pump life but not everyone is of that opinion I don't belief.

Always remember, 2 captains are better than one, or one and a first mate.

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pump, return pump

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