Nope no picture..... but I have random growths of RED patches on my rock... it's not purple/lavendar/brownish red.... it's just RED .... I have none of this on my sand and it doesn't seem to spread anywhere near as quickly as my past outbreaks of diatoms... could this be a form of coraline???? Is cyano slimey ??? if I scratched it with my finger would I be able to tell????