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tannic acid

  1. Tannis from driftwood

    Advanced Freshwater Discussion
    curiosity on the 'shelf-life' of driftwood in a tank i could guess there isn't enough tannis to last the life of the tank i could guess what tannis is in the driftwood will leach out into the water and not be replaced in the wood when it's gone. i know certain pleco's have a diet that...
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