OuzoJust for ease of use? I am doing some Vermicomposting now and am likely to put my compost through the worm bin. I am pretty sure Gascanastan mentioned worms despise kelp.
Perhaps after a hot run through the compost tumbler it wouldn't be as much of an issue?
Run fresh kelp (thoroughly rinsed) through your worm bin for maximum benefit
HTH
CC
EDIT: The brown kelps have the compounds (Secondary Metabolites) that are most important, i.e. green & red do not have these (Alginic acid, Mannitol, et al) and the chances that you could grow brown in an aquarium is somewhere between 'nil & none' - buy the dried kelp meal out of Acadian Seaplants, Ltd. in Nova Scotia