Okay.. so my 55 has been established for quite some time.. but almost biweekly my glass gets so dirty from almost a brown algea.. and i squeegee it off.. just wondering what it's coming from or if it's harmful?
Not harmful, but I couldn't tell you what it's coming from other than too much light. Otos are excellent for clearing up brown algae, as are nerite snails.
I have 2 tanks in the same room with the same light "on" time, but I still get brown on the glass of only 1 tank.
Thats with a water change every week and nearly perfect water stats.