Here is my experience with a few types....
IO - started with it...had no problems but switched brands because of threads like this...just wanted to see what different salts "did"
Reefers Best - noticed no significant different other than price, plus the shipping (cant find locally)
Tropic Marin Pro - same as above
Salinity - PE seemed better, but who knows...could be caused by a number of things. Also increased price plus shipping
Kent - a lot of fluctuations in main parameters from the start
Reef Crystals - very much like IO, levels a bit different though
IO - I'm back to it and have been for over a year. I will probably stick with it. No problems at all, consistent, and they've been around forever. Plus the price is nice...I can get a box for the price of one bag of others...that means more money on corals
Again, as already stated...find what works best for you and stick with it. Good luck!
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