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Although I have never used Purigen, lots of members recommend it for tannins.
I had a small piece of Mopani and it was still leaching 2-3 months later (after several days of repeated boiling and dumping the tannin-rich water prior to placing in the tank). I didn't mind the colour of the water, it was just amazing how long it took to fade.
I had a small piece of Mopani and it was still leaching 2-3 months later (after several days of repeated boiling and dumping the tannin-rich water prior to placing in the tank). I didn't mind the colour of the water, it was just amazing how long it took to fade.
