my LFS gave me a free fluval filter that was used in one og their fish in the store. is it safe to use in my tank? if not what can i do to make it work in my own tank with out harming my fish or water paremeters
amehel0;1829447; said:u can run it in a 1/10th blech to water solution then a complete water soltion and use new media to cycle it or old media from ur own filter!
^^^