Brown stuff on tank glass?

[andyl9063]

I'm getting a brown stuff on the glass. It's a lot of them and it comes off pretty easy. I"m very sure its not diatoms or brown algae, because I get a lot of those and this is not it. Its like little tiny sticks of light brown.

[Saxthom]

One thing I have noticed is right before I wipe the glass if its also right after feeding time. Sometimes the parts of the foods they spit back out will stick into their slime on the glass. Just an observation.