Ive done one DWC and loved it but, a bit of a pain with super hard tap water and no RO haha, had to carry 10 gallons home from supermarket at a time. I would agree with what everyone else has said. You want your roots wet but not the base of your plant that will get some rot issues going. I like to have water come up maybe 1-3in on bottom of your net pot! Drop that pH to 5.8-6.1 and you can even run your nutes up to 800-1200ppm so thats not an issues....I know im just saying what everyone else did but i hope it helps