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I was looking at the Cor alsoWav's are Neptune's powerheads.
I will probably go Wavs....I like the control factor and integration with Apex.
Probably gonna get one of those new Apex COR-15 Main Pumps soon too!

I'm running 2 waves at the 'back' wall of a 4.5' 160g peninsula, mounted below and outboard of the overflow (also on the back wall). I chose 2 waves for the flexibility of flow control and current generation along the tank...and I'm running an Apex...with a bit of effort, I have been able to create two Top & Bottom return currents alternating side to side...and not moving the gravel. This pattern causes the LPS/Soft coral to 'wave' towards the back of the tank, giving the illusion of a current running from the 'open' end of the peninsula back into the wall. Sorry, I did not give any serious consideration to the Gyre and cannot speak to their strength(s).

