Update...I would like to thanks this awesome community. After this post I was PMd from 2 different members offering help. Great thanks to @rock-n-reef and @marper331 for stepping up to helping out!!!!!
I was running low a couple months ago when Bulk Reef Supply got some in stock. For the first time I decided to get the 8 gallon kit. It comes in two 5 gallon buckets to which you have to add a couple gallons of RO/DI water to each. Very easy to mix, saved $54 over buying four of the two gallon packages, and I don't have to worry about running out for a while now.