This is Beachcomber’s Floating Tablet Dispenser, for use with bromine or chlorine tablets.
NOTE: Never mix bromine and chlorine tablets together.
INSTRUCTIONS: Simply unscrew the bottom barrel (counter clockwise), load tablets, screw barrel back on, tighten locking nut. Adjust the barrel so its barely open (2-3 open slots) then adjust accordingly. The larger the opening, the more chlorine/bromine will be dispensed.