No clue. I read it is safe to use in a hospital tank if you are treating a sand sifting goby for ich. It doesn't absorb the copper. The article also said it was also used as blasting sand and for ashtrays in garbage cans? I just bought some play sand from home depot. I will toss it after treatment is complete.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.