ah no good in my tank then if it needs more light to carpet, as with the tannin in my tank lighting is reduced the further down of course

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i have been trying to remove the tannin to see if i can increase the lighting towards the bottom but nothing is working, i have used filter floss , and done 50 % water change every week and still tannin is produced. so i am assuming its coming from the large mangrove root ? cant think of anywhere else its coming from.