Brute 3 Gallon Bucket to Larval Rearing Vessel Conversion

A curved piece (print two) and a central, curved air line anchor that can be used to convert a standard Rubbermaid Brute 3 Gallon bucket into a small pelagic larva rearing vessel. Stick them down with aquarium silicone (or a PET solvent, probably), then spray paint black if desired (better contrast for side lit viewing, darker interior.)

The rounded corners should help keep pelagic larvae suspended when higher flow is used, and having the central (also rounded) airline mount reduces places they can impact/catch on things - not as effective as a full kreisel, but similar idea and function.