J jpaul75 New member Oct 19, 2013 #1 Anyone get an orange algae on their live rock, I've never seen this and have no idea what it is Attachments image.jpg 32.8 KB · Views: 5 Last edited: Oct 19, 2013
Monkeyfish Active member Oct 19, 2013 #2 If it's hard, coralline algae or hydrozoan; if softish, sponge.
J jpaul75 New member Oct 19, 2013 #3 It's soft, odd, I've had the same live rock for 6 years, always something new!