Start with the knob turned fully counterclockwise, then slowly rotate it clockwise in hair width increments waiting a few seconds between turns. Each tank has one unique frequency which will make a wave, when you hit it, you will get a see saw type wave action that will be steady. One side should be the crest and the other the trough.
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Roger Vitko
Tunze USA
"He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!"
Current Tank Info: 210 gallon planted tank with Altum Angelfish
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