Monotub Filters for 2" Hole

These filters are used to fill two-inch gas exchange holes on a monotub during the fruiting phase of your substrate. These synthetic plug filters keep contaminants out of your monotub and simultaneously allow for ample gas exchange during the fruiting phase. Alternatively, during the substrate's colonization phase, our 2" monotub plugs should be used since gas exchange is not beneficial to the colonization process.

Sold individually (1 filter).


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