We all know that the fish and corals we keep are salt water creatures. That’s why we buy those expensive packets or buckets of dry salt mix.
Fish only or reef aquaria are normally kept at a specific gravity (SG) of 1022 to 1026. It has been said that it is advantageous to keep a fish only system at 1022, as it is claimed that certain pathogens do not do well at a lower SG. Fish can be treated for some infections by lowering the SG even more. Reef aquaria are normally kept at 1024 to 1026, this seems to be the usual.Read more →