The knob is for setting the frequency of the wave to match the length of the tank. You need to dial the knob in to get the best wave in your tank. It is not something you crank to the max.
My wp10 is in a jbj cube and on else mode it is too strong for xenia. Everything else seems to be ok but the xenia has shrivled up and mostly died off since I added the pump.
I have a wp25 in my 72g bow and in else mode it was too strong for the softies. The undertow across the front of the tank was so strong it was pulling the mushrooms off the rocks. The GSP would not open. I have it dialed in on W1 now and the undertow is strong but not as constant and the softies are doing great.
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72g bowfront, t5.
29g JBJ nano cube, ATI 26HD.
Livestock: clown fish, chromis, coral beauty.
Corals: Toadstool, maze brain, candy cane, mushrooms (purple & green hairy), button polyps, green zoas, GSP.
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