Hey Steev, I recently purchased some Erythro. at The Fish Store (Maracyn I believe). I mentioned to them that I was told to dose every other day for a week, for blue-green. They said this is not a great idea, as it may encourage more resistant super-strains to manifest themselves later. They said it is better to hit it hard every day for the entire treatment course. What is your opinion (or anyone else) as it tends to be pricey stuff for a large tank? -Don Rudee __________________________________ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member