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Re: colored water
Several have already pointed out that driftwood can leach color into
water. A substrate with peat or potting soil can do the same.
Water changes help. Also, activated carbon will remove color. Both of
these are temporary color reductions. Use new, high quality activated
carbon and remove it from your filter after the color is reduced to an
acceptable level. Activated carbon may also remove some trace metals, so
you probably want to hold off on iron and/or trace-element fertilizer
until after you remove the carbon filter.
After a while the color will stop bleeding out of the wood (or substrate).