dude its a crap shoot. half the people have good results other half not so much. my lps were fine. but it killed all my sps. but it did work. why not just get the UV wand? try that first and then use dino X as a last resort? people have had great reviews of that UV wand. just hold it over the rocks for like like 15 seconds then move it a few inches and repeat that every day for a few days and you will see like a 80% reduction. and for sand, get a diamond goby. or get like 5 conch snails. no more dino on the sand.