Gelato - Hydro First Grow

Struggled with possibly a calcium and magnesium deficiency on #4. Had to remove some damaged leaves and now have separated it to her own reservoir. Has not stunt her growth, she is bout 5 inches taller atm then her sisters. Flow has been a struggle, if I was do one thing different is go with a 1" drain system instead of the 1/2" it presently has. Started with a drip, yet due to clogs and wanting a faster circulation, I changed to a steady flow over the clay. Presently #1 - #3 are on one reservoir and #4 on its own reservoir (In the video above shows #4). It's been a matter of adjusting the output flow and tubing size to get maximum flow without backing up the drain system.