Originally Posted by Aquariumkeeper
just go to petco , buy some rocks stack them up and that solves the problem. ive heard of a guy that had the salt levels to 1.001 and the freshwater fish and red claw crab lived.it should be SEA SALT not aquarium salt. oh yah one more thing if u plan on having a red claw crab feed it well or the fish are food. like 2 algae wafers a day or somethin like that
This really irks me. Aquarium salt to me is the big buckets of salt you use for SW
tanks. Epsom salt is for treating constipation and sea salt is for eating.
As for whether or not crabs need salt. That's no 100%. Some crabs like vampire crabs and thai microcrabs come from 100% freshwater they breath and breed only in freshwater. Other crabs like fiddlers should be kept in 100% marine or near marine conditions with more land than water.
Tell us what crab you're getting and then you can find out what care it needs. IMO
most crabs need a significant portion of land to be happy.