I'm not using it in the DWC,but I am in my soil containers. If you'll notice when you mix it in a gallon of water. See how thick it is? If the water has a heater in it to keep the sugars disolved.Then I would say you could use it in hydro. Since I'm so new to the hydro,I'm just takin' baby steps as to not screw up! Cause you can bet your ass that it's gonna be very difficult to turn it around in hydro. Soil is just so much more forgiving..

Even when I mix it for soil,I heat my gallon of water,double boiler style. Just to bring the temp up some. Never heard of anyone doin' this procedure.. It works,though.. Just get it warm.. Then mix. Let it sit for a few mins. and the plants love the warmth. It's a slight warmth.. Not hot.

Ga.