There is a huge conversation with Randy Holmes Farley on bulk carbon at reefcentral.com. 1 tsp of Black Diamond and a few other brands is worth four times as much from some inferior brands and twice as much as the coconut variety.
Cameron wrote: There is a huge conversation with Randy Holmes Farley on bulk carbon at reefcentral.com. 1 tsp of Black Diamond and a few other brands is worth four times as much from some inferior brands and twice as much as the coconut variety.