I used Bayer for the second time today. I'm dipping all my acros because of AEFW's. last weekend I dipped using 25ml for 2 gals of water. I went light by accident. I did find live flatworms after I poured the dip out. My fault, I should have gone stronger right? Today I dipped using 31ml per gallon. After pouring out the dip water I found 2 live flatworms. The corals were dipped for 10-12 min plus the worms were in there at least another 10 min. Needless to say I'm disappointed.