Can someone help?

[Bottinelli]

I have a 55 gallon freshwater with 2 Cichlids and a Clown Knife and out of no where i started to see orange spots on the rocks. It looks like rust or something. Does anyone know what it is or what is causing the spots to appear. Pictures are below.

If the pictures are not below please look at my gallery. They're the only pictures in there.

 

[WingnutSr]

Not sure what it is, I would guess some type of algae. Do a water change and try running some carbon. It always works for me when I start to see algae building up.

 

[bigginapk]

looks like the start of a diatom bloom. did you change your water source or get water from a differant place.? run carbon like wingnutsr stated and a water change that should help.

 

[gwrench]

got any water parameters available?
Also how long has the tank been setup?
Type of lighting?
Initial water quality RO? Tap Water?
Clean the gravel lately?
A little more info will help better solve your problem.
Good Luck