Dear Shell Cleaners, I have searched the archives for information about ultrasonic cleaning so not as to ask the same question again. I didn't really find indepth information. Can you share your expertise please? 1. Are there different kinds of ultrasonic cleaners? If so, which work best for loosening grime and coraline algae deposits? 2. What solutions when used best clean without damaging the shell? (Is it a multi-solution process? If so, what are the steps?) 3. How long should a shell be in the cleaner? Can it be left in too long? 4. Are there steps to be avoided so as not to damage the shell? Thank you for your time, Jubei ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------