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cah925 · 05-29-2008, 06:39 PM

I had some wood release tannins and after a while it actually stained the glass. I was able to clean it off easily, but I had to tear the whole tank down to do it.

The next time I did this, I used Purigen. I had to change the bag about 2x weekly for about a month, but the water stayed clear.

05-29-2008, 06:39 PM	#6 (permalink)
cah925 Senior Member Join Date: Jun 2007 Location: Gainesville, FL Posts: 518 iTrader Ratings: 54 iTrader Positive Rating: 100% Plant Points: 39550	Re: Tannin over the long term I had some wood release tannins and after a while it actually stained the glass. I was able to clean it off easily, but I had to tear the whole tank down to do it. The next time I did this, I used Purigen. I had to change the bag about 2x weekly for about a month, but the water stayed clear.