The air tube is not plugged, I haven't put any additives in the tank... I have been curing the water by letting it sit off with an airstone for a few days.
the only thing I can really think is water level.... It is an insump skimmer and currently the water is 8-10 inches deep. The water level cannot get any lower then 6 inches. What would be the appropriate water level for this skimmer?
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