Kind of camouflage in the rock...
whippetguy Well-Known Member RS STAFF PREMIUM Mar 26, 2013 #2 Snowflake clavularia Sent from John's Tapatalk
whippetguy Well-Known Member RS STAFF PREMIUM Mar 26, 2013 #5 yes, I have the blue form of it all over my tank. At least it's pretty.