There are some pepermints that will eat and some that wont. My freind bought 2 from a store in richmond and it cleaned out his tank of about 200 aptasia..... I tried 1 from JL but it didn't do much, so I got 2 from the same store in Richmond and they also cleaned out my tank of aptasia I had about 20 aptasia and now have 1. If you're intrested in buying some pm me for the name and adress of the store. You could try 2 and then when they are done cleaning 1 tank move it to another and so forth.....

cheers Chris