i put a piece of cured drift wood from my lfs in my tank about a month ago it is leaching tanins in my tank im not so much botherd by that i like the amazon look as i have a oscar a green sev and a geophagus and baby rtc+tsn, but i have like brown hair growing on the wood like algae or somethen it is a 75 gallon witha two fluval 404s and the light is on 5 hours a day what should i do about the algae i need help thanks