Crystal Sea Marinemix and Bio-Sea Marinemix are the best you can buy, and what you should be buying if you have invertebrates.
If you do a search on Reefcentral about CS salt you will find that It caused a MASS bleaching episode.. We are talking 400-500 people when they switched from IO to CS... Also CS is extremely low in Mg
.. You are going to be spending more money in Mg
supplements than you will be the salt... I have used CS salt 1 box.. No bleaching but I can say my corals didnt look like the do now... IMO
Oceanic is the best salt you can get... I have used several brands of salt and nothing has made my tank look like this Oceanic does... That study only showed that you can hatch Urchin eggs in CS salt... I personally dont want to have 100's of urchins in my tank.. Although just about any Invert that has babies will loose just about all of them due to skimming/fish food... I would do a bit more reading about Crystal SEas salt before you decide on using it... Here is a 959 post thread on RC just about the bleaching alone.. CS bleaching