Where to place Powerheads

[afsportsguy000]

I have 2 550 K's in my tank, I have NO idea how to set up movement in the water/Flow. Please provide all suggestions I am clueless.

Do I want to focus the flow more on the rocks? Right now thats hard to do with where everything is, I have the upper right one facing basically across the top, then the bottom left one I have it facing up and towards the top right.


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Left Side,
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Right Side,

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[Turbosnail]

Do a google search for Jake Adams. He was one of the speakers a couple of months ago and he is really good at explaining flow.

Here is an article he did on flow. http://www.advancedaquarist.com/2007/1/aafeature

 

[Flame Angel]

Do a google search for Jake Adams. He was one of the speakers a couple of months ago and he is really good at explaining flow.

Here is an article he did on flow. http://www.advancedaquarist.com/2007/1/aafeature

Ditto

 

[MrX]

Long story short, Jake said to create a gyre in your tank, alternating your powerheads so that the gyre would get running and continue for a bit. Also the powerheads should point upwards toward the waterline. Jake mentioned you should alternate the flow and not have them running at the same time which allows the gyre to build up. He also mentioned that you should alternate the gyre as the coral development would be on the back-side of the flow.

In my 120g DT setup I have two Sicce Voyager 4000s; one on the left and one on the right, centered front-to-back, about 70% up the wall. At first I was running them alternating every 15 minutes which seemed to be okay; I was also cutting down the run-time at night to provide some calmer waters. That seemed to be causing temp issues overnight so now I alternate the two powerheads every 6 hours. I think that's a happy medium, creates a gyre, and gives enought time between direction changes for the residents to find a calm place if they want to.

Originally I had the powerheads pointing more towards the surface but then caused a lot of sand movement, so I angled them more level across the tank. I think I have plenty of aeration with the 4 return loc lines breaking the water surface (dual returns, each with split loc line).