"Bob A" wrote in message
...
I got some otos (8 in a 55g tank) and they are eating diligently, but
there
is some type of algae on many of the plants (not all) and rocks, etc. The
worst place is the power filter intake (not the actual intake, but the
pipe). Its longer and thicker there. On the plants it is like a 3-5mm
thin
fuzzy strand. A light brown color.


http://faq.thekrib.com/algae.html#hair

Tough stuff.
hth