Dadof5 wrote:
On Nov 5, 8:07 am, KurtG wrote:
Is it crusty or gel like? I have a dark red coraline as well as the
usual pink stuff.

However, it sounds like you're talking about red slim. Then you need to
deal with phosphates and nitrates.


Is this not diatom algae? too much phosphates and silica?


Me? Not that I know of. Both my phosphates and silicates are
undetectable and there isn't much growing on the glass.