Try pulling the longer patches by hand and then drop a Nudi right on the remains of the patch. I have noticed they sometimes have a hard time with Bryopsis that has grown fairly long, but once I pulled the majority of it off the rock, they cleaned up the remains of the patch quite well.badbread said:So I picked up two of those lettuce sea slugs. They have been going to town on the algae for what, 2-3 weeks now? They are doing a pretty good job. Some of the larger patches they avoid, but any frag plugs or rock is now almost totally clean. They are actually quite cool little creatures with their big eyes and enormous mouth.