DubTub Adapter

6qt Sterilite Lid Filter Adapter

The DubTub Adapter connects two 6qt Sterilite tubs into a single fruiting chamber. The design is compact, adding almost no height to the tub stack, so it fits on any shelf where a standard tub would. Once your substrate hits field capacity, you seal it up and leave it alone. No misting, no fanning, no opening the tubs until harvest. The sealed environment maintains its own humidity and CO2 balance without intervention. This design has gone through multiple iterations. Each version was tested by mycologists across the community before the next was made, and their feedback shaped everything from the filter placement to the fit tolerance. Snaps cleanly between two standard 6qt Sterilite lids, seals without tools, and holds up through repeated use and sterilization cycles.