Hey man can you get a full setup shot? Did you buy or build your setup?
I dont have a good picture, but its simple. Basic bubbler.
5 gallon paint bucket from home depot.
cut a hole in the top for a flower pot (Amazon sells awesome net pots that fit as a lid on a 5 gallon bucket)
Get a fish tank air pump and and air stone. ( I get the double pump and get 2 6 inch air stones) To keep oxygen in the water for the roots.
Then a submersible fish tank water pump. Run a hose from the pump that is inside the bucket up and into the pot to run water down the plant back into the bucket. Continuous circulation.
Fill the pot with hydroton balls.
Put the seedling in the rockwell cube and put it in the hydroton balls.
There are a bunch of DIY DWC threads on here. Super easy stuff.