The baby cheese vent to the DWC pot. I use Plagron Eurobubbles for it. I made RO water and mixed with the solutions ( 1.0 g/l N-P-K, 0.4 g/l Ca-Nit, 0.2 g/l MgSO4 ). The lamp to plant distance is 60 cm and 20K lux. After some days the roots reach the bucket, the top of the water.