Skimmer Question

aldog51

Member
Got a berlin type skimmer in my fuge. I have had it running approximately 8 hours or so but no foam yet. Is this normal? I hae a 275GPH pump on it with 2 venturi jet nozzle on the intake. Also it has a venturi hole in back of it where tubing can be placed to alow for air. Ther is a ton of air in it now, but should I use the air tube also? When I do use it the level of the bubbling effect drops!! i am stumped!!
 
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