I'm a big believer in what Optimal has done for my pond. I also stocked the heck out of FHM a year before stocking RES and I still have clouds of them. Year one I stocked FHM, year two I stocked RES and year three I stocked SMB. So far I can't complain at all, but all ponds seem to do great their first 5-8 years. So we will see how long it can continue.