I use this salt. I started using it over the pro which is what I was using. soo far soo good and I dont know if it is wishful thinking but the color in my sps seems to be improving. I ve lost some of the browing at the base of my acro in the past 3 weeks. I have been doing 10gal water changes every week on my 180
some reading I got on my test:
alk:8.0
calcium:427
mag:1250
ph:8.3
nitrate:0
Phosphate:0
i have been using reefcrystals for years with no issues, i switched from tropic marine to rc a while back but i heard they chamged the formula and guys are just using the regular instant ocean now with good results and its cheap