Reading through the latest thread in here about what salts everyone is using, I am wondering if anyone is not dosing their sps tanks, and just doing frequent and/or larger water changes? Obviously it wouldn't be practical for large tanks, but I'm running about 65g total water volume, and as I save up for test kits, dosing pumps etc, I've just been doing 8%(5g) water changes about twice a week and the sps I currently have, have been doing pretty well over the last few months.