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Old 06-10-2004, 12:12 PM   #1
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What's the purpose of a chaotic water flow pattern?

What's the purpose of a chaotic water flow pattern?
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Old 06-10-2004, 01:24 PM   #2
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To simulate waves, reduce the amount of dead spots, reduce the amount of collected detrius in crevices due to constant flow patterns, keep things interesting.

If you "crash" your multiple PH flow together just right it can make some very unpredictable flow patterns which is nice.
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Old 06-10-2004, 01:24 PM   #3
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To simulate conditions on a natural reef as closely as possible. Most corals will do better with changing flow conditions that make them wave back and forth than they will with laminar flow always hitting them from the same side. Another reason is to eliminate dead spots in the tank. If your flow patterns don't change, detritus will collect in these dead spots.
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Old 06-10-2004, 01:51 PM   #4
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The dead spots on the rock and sand arent the only aspect of "dead spots." think about an sps coral that doesnt move. If its just getting current on one side, it will have an "upstream" side and a "down stream" side. Which means that ditritus can collect in the bends and pores of the "down stream" side. Constant movement reduces that risk.

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Old 06-10-2004, 07:32 PM   #5
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Flow does several things and a couple that hasn't been mentioned is gas exchange, sedentary inverts require waterflow to bring them O2 and to remove waste gasses. They also require waterflow to bring them food, keep detritus in suspension, etc...
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Old 06-10-2004, 08:13 PM   #6
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For a standard rectangular aquarium, how would you achieve this type of flow? For example, on a 75 gal, would a PH on each end suffice, in addition to any motion created by an Emperor 400 HOB, and a protein skimmer?
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Old 06-10-2004, 08:39 PM   #7
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That would still be laminear flow. Once all the powerheads are up and running they will establish a flow pattern that will only deviate if broken by something blocking the stream. To get a truer wave action, you need the flow to switch back and forth. From my understanding, the wave action will help with corals, but with a healthy overall flow it is not entirely necessary.
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Old 06-12-2004, 10:54 PM   #8
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the wave action stuff can wait till you get your tank established and to the point where adding corals makes good sense.
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Old 06-12-2004, 11:37 PM   #9
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It is a little more chaotic if you have the PH streams crossing each other. I know Egon said not to cross the streams, but it killed Zuel and all, so it can't be all bad.
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Old 06-13-2004, 12:33 AM   #10
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Quote:
Originally Posted by Bearfan
It is a little more chaotic if you have the PH streams crossing each other. I know Egon said not to cross the streams, but it killed Zuel and all, so it can't be all bad.
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