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Old 08-18-2007, 05:54 PM   #1
paulg
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Powerhead positioning


Should powerheads be pointing up to give the ripple effect or down to corals/liverock?
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Old 08-18-2007, 06:13 PM   #2
ckusnierek
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You dont want too much surface aggitation. That will lead to more evap and salt creep. As far as pointing the PH it depends on the type of corals. LPS demand high flow, most LPS and softies required med/low flow. So adjust accordanly. Keep in mind (I don't know your setup) you wont get shimmer without halides. (well maybe a tiny bit with T5 or VHO)
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Old 08-18-2007, 06:44 PM   #3
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Quote:
Originally Posted by ckusnierek View Post
you wont get shimmer without halides. (well maybe a tiny bit with T5 or VHO)

Well i was about to say that your wrong about the halides being the only way you can get shimmer. Untill you said maybe a tiny bit with t-5 or vho. Because t-5 is the only lights that i have and i get shimmer. maybe not as much as some people consider a shimmer. but in my setup is a 20 gal long and i get quite enough shimmer on my tank. i could go for more but i am satisfied.

Oh and about the power head thing i have an old little pump aiming at the surface. and a korilia #1 aiming at the sand and the surface. since the korilia has the V shaped output i use it to blow both ways.
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Old 08-18-2007, 06:48 PM   #4
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If you have a protein skimmer, I wouldn't worry too much about pointing the powerheads towards the surface. The skimmer will provide plenty of oxygenation for the water. Personally, I like to locate the powerheads towards the top back corners of the tank pointing down at the middle of the front of the glass. That allows for random currents where the two flows meet. It really doesn't matter how they're positioned as long as you achieve the flow that you want.
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Old 08-18-2007, 07:50 PM   #5
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I don't think that oxygenation was the question. but more or less the shimmer from the lights. But good point though.
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Old 08-07-2010, 03:40 PM   #6
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I have a 125 L salt water tank with around 15 Kg of live rock. I use Aragonite CaribSea (sugar-sized) sand. My tank has been set up for a couple of days now and im planning to add a powerhead or two if necessary so that it could flush off all the unwanted organic matter off the rocks. My question is how many powerheads i need for my fish tank and at wat gph and were to position and direct my water flow to work efficiently since i have sugar-sized sand that gets messy really quick.

Thanks in advance.
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