Ok so I have a 7' tank, and I am looking for the best flow for an SPS dominant tank. Now I am running 2 gyre 250 power heads, and I am not happy with it. They are running on lunar tidal cycle. I am planning to add 2 tunze 6105 on the opposite end of the gyre, and removing the other gyre. Should I place them on the return side or the dead end of the tank. What mode should I set them on? Should I run the gyre constant, and alternate the Tunze? The tank measures 7' x 2' x 16" deep, and is peninsula tank. Thanks
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