My salt mix has a Ca
level of 445 right out of the bag. I know IO is a bit lower but why dose when you have no need too. I guess corraline will grow faster but that it start eventually on its own. At some point, you will start to hate scraping it off the glass. I have a reef tank with softies, LPS
's and I don't dose anything.
I have heard B-ionic is great though. Don't dose unless you are testing though.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,