Cool, lookin good, but you want to lay off the leaf-sprinkling. What you are doing is called reverse foliar feeding. I see on some of the larger leaves where they are starting to get pale blotches- you're actually leaching nutes out of the leaves with the water.
You are also ready to start giving nutrients. Since you are in a hydroponic medium, you'll want to look into hydroponic nutrients and keep your pH lower than you would for soil.