Monotub Plugs for 1" Hole

These plugs are used to fill one-inch gas exchange holes on a monotub during the colonization phase of your substrate. After the colonization phase completes and it is time to initiate fruiting, these plugs should be changed out to our monotub filters.

These plugs can be used on our inflatable monotub or on any other monotub with 1" gas exchange holes.

Sold individually (1 plug).