so you did not notice a calcium increase when you used reef crystals ?? hmmm ... that is SUPPOSE to have a higher calcium content than reg.
IO.
i use Red Sea Coral Pro and my calcium stays between 450 and 480 (i have a SPS tank) without dosing anything. i would be careful when changing salts AND dosing supplements. i would stay with the Reef Crystals and do larger water changes until you think that you have switched out all of the water in the system, THEN check the calcium level. i am thinking that your WC's are not large enough to change your parameters enough to detect the changes. i would do these partials over a 4 week period ...
week 1 - 30%
week 2 - 30%
week 3 - 30%
week 4 - 30%
i know that is 120%, but it pretty much insures that you have changed out all of the water.
FWIW, Tropic Marine salt came in dead last in a salt study done by a well known author and hobbyist last year. the test results have not been released yet, but they are coming out as soon as he has a little free time to write them up.
