algae ID please

[marie]

Originally Posted by i have crabs

this is one of the dumbest things ive seen on here in a while, its not you fish bait just the array of answers when this is without a doubt cyano,now im gonna probably be crappped on for this but if poeple on here with hundreds or thousands of posts couldnt tell that was cyano in 1 second they should try using tap water for a while and start learning about a huge pest in this hobby

I think you need to chill. The first pics that were posted could of been anything and your first post in this thread was less then helpful. I agree the pics of the sand look like cyano but the stuff on the rocks is the prettiest cyano I've ever seen ...and yes my tanks have been covered with cyano in the past

Oh and increased flow, skimming, more water changes, change out any old bulbs that are past their prime and less feeding...if it is cyano

[X-Treme]

I said cyano before, and now I'll say this..............It's CYANO.

[demon666]

that was my first thought but i have never had it in my tanks so i wasnt going to say anything......... but now more experienced ppl have said so i will tend to agree