With just one of these there is no need to worry about anything. They will eliminate bristle worms, all snails, bryopsis, gorilla crabs, hair algae, bubble algae, copperband butterflies, tangs (all sizes) lionfish, angels, gobies, clownfish (including designer clownfish) pipefish and manta ray fry.
Guaranteed. I just collected a few dozen (I had a bristle worm problem) You only need 1
Guaranteed. I just collected a few dozen (I had a bristle worm problem) You only need 1