Tabitha Posted August 28, 2022 Share Posted August 28, 2022 Does anyone know what this black/purple coating is on the plastic plants I have in my freshwater aquarium? Is it a type of algae? It’s smooth, not furry. 1 Link to comment Share on other sites More sharing options...
nabokovfan87 Posted August 28, 2022 Share Posted August 28, 2022 Hello @Tabatha Welcome to the forums. I would suggest trying to remove that from the surface by removing the plant and then trying to clean it. It could be the plastic underneath the paint, the finish coming off the plant? It could be some sort of a coating developing due to algae / lighting and if that is the case it would be a bit easier to remove outside of the tank with a toothbrush or something similar. Do you see this only on this specific plant or many of them? Is it directly under the light? Is it on any other surfaces? Link to comment Share on other sites More sharing options...
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