Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
That is a very mild haze and will clear up just fine. Get started with the fishless cycle.
When you are ready to plant, drain the tank. Plant. Then put a plate or plastic bag over the finished aquarscape and run the water in slowly. Allow the water to seep over the edges of the plate. This will minimize the disturbance to the sand, and minimize the clouding. You will probably get about the same amount of haze as in your first picture.