Louise02 Posted March 8 Share Posted March 8 I am in the process of establishing a hospital aquarium. In the meantime, I had to treat mollies and guppies in a tank with Aqueon Plant & Shrimp aquarium substrate. I love that substrate (after six months of cycling without fish), but now I have contaminated it with several meds. Is it best to throw it out? or can I continue to use it? Link to comment Share on other sites More sharing options...
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