Does natural sunlight hit your tank? That was causing some staghorn in my tank and it was all growing on the sides of the plants that faced my window.
there is some direct sunlight that hits the tank right after the lights go out. It's for about 40minutes at sundown. I hadn't thought about that but you may be on to something. I've had the tank in the same spot for over a year, but maybe due to the poor water conditions I was experiencing, the additional sunlight may be making the staghorn more prevalent. I'll keep an eye on it. thanks!!