So, the watering hasn't been discussed by me for what I'm doing with the DWC. So its first nutrient solution lasted two weeks. the second nutrient solution was between 1-1/2 weeks. On 3/17 i cleaned out the DWC bucket and all its parts before adding a new solution and placing the plant back into the DWC bucket, and i only did this because i watered through the top the first time i added nutrient solution and some rock dust got inside the bucket, wasn't hurting anything i just wanted to clean it to prevent any unforeseen issues
@JJDank, anywhere from 2-3 gallons, goal was to stay 2-3 inches below the bottom of the net pot. As the roots take of more and more space, the amount of solution youll use will go down.