Cinnebuns Posted March 14, 2022 Share Posted March 14, 2022 I know copper is poisonous to snails. My algae wafers contain copper sulfate which I know is not the same as copper but it does contain the copper element. I know this changes its properties so it's probably snail safe but I want to make sure. Is it? Link to comment Share on other sites More sharing options...
colo3000 Posted March 14, 2022 Share Posted March 14, 2022 (edited) Although excess copper is toxic to invertebrates, invertebrates need a small amount of copper in their diet to live. I can't 100% say that your algae wafers are safe, but most well known brands contain the correct amount to not be toxic to inverts. Edited March 14, 2022 by colo3000 3 Link to comment Share on other sites More sharing options...
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