Green-Grabber material

[holdenj_04]

If this has already been discussed please redirect me to the thread. I have concerns about the affect of the green-grabber on water quality. From what little I have read no one actually knows what the granules are.

[SantaMonica]

They are rocks.

[holdenj_04]

sorry for being vague, what kind of ''naturally occurring solid aggregate of one or more minerals or mineraloids'', or rock do you use?different types of rock can do many different things in saltwater over long and short periods of time.

[SantaMonica]

Well it's sort of a trade secret :)

It's one of the ones, however, that is already used by many people.