Mengo Posted June 22, 2022 Share Posted June 22, 2022 Got a box of "stuff" from a local fish club auction (literally what is was called 😂) and found this in it among other stuff. Does anybody know what it is? Can it function the same way as crushed coral? Thanks! 2 Link to comment Share on other sites More sharing options...
Fish Folk Posted June 22, 2022 Share Posted June 22, 2022 (edited) Looks like some dried coral… impressions of mushroom-corals perhaps? Might have been in a saltwater tank once upon a time. Maybe more likely something brought home from vacation, washed off, and added to an aquarium for fun. Yes, it probably will do some good like raise KH a tad bit. Depends on how it reacts to your water. Edited June 22, 2022 by Fish Folk 1 Link to comment Share on other sites More sharing options...
CJs Aquatics Posted June 22, 2022 Share Posted June 22, 2022 Dried coral I believe, I agree with @Fish Folk 1 Link to comment Share on other sites More sharing options...
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