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#1
09-20-2006, 12:35 AM
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Question 2, water flow and designs for reef tanks
Sorry its been so long.. summer and all, but time for question 2
This should be a good question to bring up some discussion, lets hear everyones thoughts and work through it to see how we end up. This is a little simpler than question 1 and I feel that we might get more participation if we start off at the basics and work to the advanced topics. So lets hear your views, reasons, and ideas. Don't be scared to ask questions or to post different opinions of others, at the worst you might be asked to back up your ideas with some simple reasoning  Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*Some strive to be perfect.... I just strive. 
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#2
09-20-2006, 03:38 AM
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More = better? Heh, I just go crazy with the main tank flow using powerheads and whatnot. I lean towards PH's over closed loop because the newer ones put out a LOT of movement and consume less electricity. No plumbing to consider into the initial planning either.
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This and that.
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#3
09-20-2006, 02:16 PM
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More flow is good, but if it should be balanced. There's little point in having 5000gph through the middle of the tank and a bunch of dead spots that allow nusiance algae to grow. From that point, a closed loop running 6 or 7 outlets would be a good choice because you would be able to direct some of the flow.
Newer powerheads are a good choice for smaller or non drilled tanks because they can produce a lot of flow (tunze nanostream) with very low power.
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#4
09-20-2006, 03:01 PM
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I use a 6000gph pump through an OM 4-way. Love it.
As the corals grow I find I keep having to adjust the flow. Now that some of the corals are as big as a football I am noticing the odd dead spot.
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250 BB Starphire SPS, clams, & zoos 3 x 250 DE, IC 660 W/T5s OM 4-way, Hammerhead Pump Calcium, Kalk, RO filters, magnesium, Excellent prices
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#5
09-20-2006, 03:50 PM
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I'm in the simple is best phase of my reefkeepng, (who knows whats next)
 Two MJ mods at either end of my 72 pointed at each other gives me lots of random flow.
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#6
09-20-2006, 04:07 PM
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I'm using 2 Tunze streams in my 75, each at opposite back corners point diagnally across the tank. This give me oe dead spot which is a bare patch of bottom, so when I do water changes, I siphon the crud from this one spot.
I also have about 600gph from my return in a sea swirl, but that much flow from a 1" pipe is amost nothing. One thing I notice is that the corals that are closer to the direct stream of flow tend to grow faster than others with less flow. It also gives the fish some exercise when swimming around mid tank.
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Brad
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