Last year I finally ran out of salt and shopped around for something new. I've enjoyed using Sybon Reef formula, but it's nowhere to be found. I did the Fritz brand for a few months, using about 750g worth... maybe more. I ended up buying a barrel of the Aquavitro Salinity salt, and today I cracked open the barrel for the first time. Here's the official page about it: http://www.aquavitro.com/products/salinity.html The white polytank has ...