Subject: Salt Powder vs. water ratio vs. going out of solution

The professional grade salt I'm using didn't have any mixing instructions. I mixed 14 cups salt powder with 14 gallons of RO/DI water half an hour ago. The water is cloudy and salinity is off the chart. I can't get any more water until 18 hours later. Is it OK to add 14 more gallons of water in 18 hours later? Or will the water chemistry be out of whack if I do so later?
About all I can do right now is run to the water dispensing mill

Guess I should've stick with noob grade salt with step by step instructions.