i starting to have this black strand on my rocks can any one tell me what it is? it does not have any bubbles on it . it looks like black pubic hair.lol.
its not cyano . it looks like black strand of hair. does any one ever had something like this on there rocks.im trying to take a better pic but its hard with my cam
DEVILS PUBIC HAIR MAN!!!!!!!!!! im pretty sure its the beginning of cyano may look black to u cus its a really dark red. is there any flow in that area?