I took the idea of the automation of oysters, and tried to do a build of my own, ofcourse trying to make a build that's compact, cheap and efficient.
what I came up with is this
this build is done using the transfer nodes from Extra Utilities
there's 1 chest with a normal transfer node extracting sand as an input
the sand is then carried through pipes to the oysters
12 in total, 1 for each color with a colored pearl block beneath them
the second chest has a retrieval node, with an inverted item filter set to ignore sand
with a result of this