Offered in a range of convenient sizes, Diamond Filtration Media works faster, longer, better. Performance tested and certified effective by Marineland Labs™, each has been compared against the leading brands of chemical filtration media.
White Diamond Ammonia-Neutralizing Crystals are ideal for all freshwater aquariums and ponds. White Diamond removes up to 4 times more deadly ammonia to keep water clean and fish-safe. It protects against sudden ammonia "spikes" and helps control the
presence of ammonia...especially during the break-in period.