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Unread 11/27/2013, 11:31 AM   #34
rvitko
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Join Date: Apr 2000
Location: Austin Texas USA
Posts: 35,785
Bubbles exiting the bottom will usually be related to one of 3 things.

Too low of a water level- this does need to be fairly consistent for the skimmer to work properly and I would recommend topping off daily or installing an ATO.

Starting the pump with the air closed even partially. Always start the skimmer with the air fully open and close from their as needed. If the pump starts with the air restricted, the water flow is higher and then air is added to that higher water flow and the bubbles travel further and faster.

The skimmer is not fully broken in, this generally takes 2-3 weeks.


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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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