Adding tannins to a saltwater tank?

    Would there be any additional benefits when it comes to adding in tannins to a saltwater tank? I know that in freshwater, it would lower the pH slightly and also make the water less hard overall, but not sure if that benefit would align or if there are other benefits?


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    I don’t think that I have ever heard of someone wanting to add that in a saltwater tank, but yes it can be done for fish that might be used to darker waters or saltwater areas like Florida swamp areas. I’d just make sure you check the pH and hardness since tannins drop both of those values.

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