Thanks, I had a recycling the last time and although I understood the dwelling effect and the principal and could see my super clean and clear water, I was questioning investing again in it, since I never had the regular skimmers before. I started the hobby with the consul of a "guru" lol who advocated the recycling one. I'll watched those vids on YT and see. Thanks again guys. What do you think of shutting down your skimmers at night to let your corals feed?