I have and am rather attached to a large piece of malaysian driftwood in my 48g which, besides softening the water, lends a bit of color to the water. There is a slight yellow tint. I have just made the plunge and ordered an XP3 canister filter and wonder if it could help clear up the water. The color is very slight and not really an issue but if there are some filter media options which would clear it up, I would like that very much.