I’m fairly new to the hobby and R2R so thank you for making me feel welcome and educated
There are a couple trains of thought when it comes to salt.
1) Salt is salt and it’s all the same
2) Whichever salt I use is the best (purchase bias)
The truth is there are absolutely differences between the salts. To not acknowledge this is just flat out wrong and pure ignorance.
The real question is: do these differences matter? Do they matter to the animals and/or do they matter to the hobbyist? Mattering to the animals is 99% opinion and will never be agreed upon. Mattering to the hobbyist? That’s for you to decide and make a list of priorities.
For me, I see very tangible differences in the quality of raw materials used. I tested quite a few salts and sent them all off for ICP testing a few years ago. It was not a competition or salt A vs salt B setup. The intent was to actually see if we, the hobbyists, get what the companies advertise.
After 20+ years and using more than a dozen salts, I have my own opinions on what I like in a salt and they may or may not align with someone else. This is where making a priority list makes sense to me. Do you want easiest on the wallet? Or is clean and consistent more important? Or do you want to support your local store and want it readily available?
So, in conclusion, there are different qualities of salt. The purity of the raw materials alone makes each salt unique. You just have to decide what is important to you. 99% of them will keep fish and coral alive.
