pinkish red in sand bed

i gotta pinkish red color forming in some spots under sand bed. not on top but maybe 1/4" down all the way to bottom that i can see from glass. normal? is it only where sand meets glass or do you think it's through-out bed? cause i can't tell by moving sand around, i can only see it in front and from sides.

 

I have it in my tank, but only up against the tank glass, when i poke the sand over a bit its not deeper, just think its a bit of coraline algae forming on glass...

 

i would hope so but don't think so. it's only under sand bed, and goes right away if i move sand around.

 

Cyanos form in all sand beds.. Nature of the beast. Its a good think according the the Dr. And don't un-cap it by moving the sand around,

 

thanks, cause i'd a uncapped all of it in the next couple days.

 

yeah i have them too, i just let it be i think it looks cool.

 

I'm already getting them in a tank that is only 6-7 weeks old. It's a good sign, especially if they start showing up in different colors.