I sold one of my 180 preaditor tanks to a good friend of mine that lives just north of me in the next section of the city...
he took a catfish, arowana, 2 big plecos and all the lights and equiptment i had with it.
he has 4 foot flourecents on the 180 gallon and they are on for 7 hours a day. The tank is nowhere near a window and everything he is doing or running is the exact same routine and tools i did when it was at my place.
He has such bad alge that he has to scrub the drift wood and rocks weekly and change out a bunch more water....?
the only thing i can think of seeing as i never had more than a few spots is he gets his water from a diffrent station than i do?
Im going to set up a 3 stage carbon filter system and see if i cant fix it that way but really is this possibly the problem?
The only time i saw a tank worse that this was in a front window with guppies and only the front glass was viewable becuse of the magnet..... its really bad...