im using all kent products and am having good sucess so far, the most important things i test for is nitrates, phosphates, calcium, magnesium and kh. without those readings i have no idea what to dose. testing is important. im currently using kent liquid calcium, kent strontium/mylbdium, kent magnesium and kent lugols solution. coraline is spreading, not like crazy but its growing. also the idea for the phosban media is a good one, that stuff works great, i think its made by two little fishies though, they make the phosban reactor for the media. and i think the strontium really helps with the algae growth to like wiggles said.