Never heard that one before.
I have a deep respect for my friend Anthony Calfo. My assessment of that topic is different than his. I have not achieved the fame and fortune that Anthony has but, I have used hundreds of the 200 gal
IO brand of salt in the last 41 years and several dozen buckets of other brands, too. In fact, I have ten 200 gal buckets of
IO in my garage (probably the last remaining 200 gal buckets of
IO in the world) just waiting to be mixed for the aquaculture project. My method of mixing goes like this. I keep 4 55 gallon barrels of
RO/DI water on hand out side, full and capped off. I move 35 gallons into a Brute container in the house. I then plug in a Mag 2400 pumping the water up from the bottom into a 100 micron filter sock. The salt goes in immediately from a 200 gallon bucket. The salt settles to the bottom and I stir it every little while until dissolved. I check
salinity,
pH, Calcium and Magnesium. Depending on how quickly I need the water, I may use it immediately or let it mix through the filter sock till the next day. If I need to adjust anything it's
salinity, Calcium and Magnesium. This has worked for me through 41 years of being a marine hobbyist.
I love Anthony, he is a wise and generous man. I think in that thread he's trying to split hair finer than frog hair.
Dick