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Unread 10/28/2019, 08:29 AM   #11
rvitko
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Join Date: Apr 2000
Location: Austin Texas USA
Posts: 35,785
Night mode generally would stop pulsing and the pump stays at pulse speed. In this case with inverse set, one pump would stay at pulse one at main, but pulsing will stop. The pump that is fluttering may have the speed set a little too low, try turning up pulse speed just a small amount.


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Roger Vitko
Tunze USA

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Current Tank Info: 210 gallon planted tank with Altum Angelfish
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