I decided to redecorate a small tank I used to keep my late betta fish and got a mangrove root from the aquatics shop I usually get all of my tank equipment. I kept it in a bucket for two weeks changing water every 2 days. The soaking didn't help much in its conditioning to be put in the tank, in the sense that after 2 weeks it was till dyeing the water brown. So I placed it in the tank with both heater and filter running, thinking the water movement and the heat would help the process. No fish in the tank at that time. It did. In another 2 weeks it stopped discoloring but then the actual problem presented itself. Happy it was finally ready to become part of a beautiful set up I took it out to clean the tank and discovered it was all covered with some white slimy stuff. Its been about 1.5 months since then and I have been regularly doing water changes (70%) and scrubbing the root clean. The white grossness reappears every time. What would you advise me to do?