how’s it going my reefing community? Using all four reef and my 55 gallon tank. I finally got my parameter stable 8.2alkalinity calcium 460. last night my alkalinity was at 8.1 10 hours later my alkalinity is at 7.1 how much all for reef do I need to get it back to 8.2 ml? I use the tropic calculator, but I don’t understand it.
