Your additive "Voodoo Juice" is causing this mess! This additive is organic, and it can't be used in hydroponics! Organic additives are incompatible with hydroponic systems, especially with DWC systems!!!! Change the solution, clean the roots, get rid of this "Voodoo Juice" additive, it's the source of this organic life in the tank! 👆 Good luck, buddy! ✊😇