Ocean Pure Pro...........Used to use Instant ocean...

Well I tell ya this subject can definately provoke some heated discussion. Personally I will never use Instant Ocean again as I was one of the victims of the bad batch of salt from a few years ago and lost my entire tank and was so discouraged I just about quit.
Today I use Tropic Marin Pro on most of my tanks and Seachem reef salt on another. I am happy with both salts - both mix well, have consistent readings from batch to batch and bucket to bucket.
For a while I was using Formula salt and if I could still find a realiable supply of this salt I would still be using it.

I have used Coralife, Instant Ocean and Kent, out of those, I use Kent as I find the IO is slow to disolve and I dislike the format the Coralife salt is packaged in the buckets. I am sure there may be better salt than Kent, but for the $$, it is damn good.

I'm using Tropic Marin Pro, I've used IO and Reef Crystals in the past but I like how Tropic Marin mixes up without any residue left behind. I had a hair algae problem that cleared up when I switched but I can't say 100% that it was just the salt.

agreed, it's a nice price, and it's mg is higher. i test for mg, and really, i don't think i should bother. 25% change once a month, and my mg stays at ~1500 all the time.

the chemical make up isn't much different, all in all, though. I was using reef crystals before oceanpure, but the reason i've been sticking to oceanpure is that it mixes so damned fast. literally 20x faster. I feel confident I can mix up change water only 24 hours in advance, and only have to worry about aeration, and not whether the salt is mixed. makes things very convenient, and convenient is good ;)

Starting this hobby with IO four years ago, can't say I've had any problems with the brand.

I have used Instant Ocean for many years. I now raise the calcium & magnesium levels when mixing, following Ben,s amounts {which I believe are from Randy,s RC recipe} and using his mag & calcium additives. I did have problems with some of the buckets with higher alkalinity but current ones fine.

I also have some Sea-Chem and like it. Seems like a good salt.

Ocean Pure Pro. Like someone said, it mixes really well and that goes a long way in my books. Have also used Seachem Reef Salt, which was also good to me.

interesting read