The tank is almost full of RO/DI water and I've added the salt. This is the salt that I am using. So far, I'm not happy with this salt.
Before I added the salt, the tank was full of crystal clear RO/DI water. After adding the salt, the tank is murky. The water is just not clear anymore. The salt has been mixing on the closed loops for 2 days now and seems fully dissolved. Jason, are you still using this salt?
In addition, look at this pile of sand and un-disolved bits (plastic maybe?) that have settled out. That all came from the salt because it wasn't there before.

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400 gal reef. Established April, 2007. 3 Sequence Dart, RM12-4 skimmer, 2 x OM4Ways, Yellow Tang, Maroon Clown (pair), Blonde Naso Tang, Vlamingi Tang, Foxface Rabbit, Unicorn Tang, 2 Pakistani Butterflies and a few coral gobies
My Tank:
http://www.canreef.com/vbulletin/showthread.php?t=28436