Whats your nute solution at? When I did a DWC I started it at 1/2 the level for the seedlings and stuff and in the first 2 days had roots from a clone. After that it didn't really stop. Weird that they only have 4 roots, mine erupted as soon as they hit the water. Are the roots just straight or do they branch out all over the place. Man I'm rambling, I'm so high, fuckin trainwreck......