This round like the very first, I did not ph correct the well water which is soft. (26 PPM) and 5.6 ph. I only add 1/2 cup h2o2 pr/ bucket (3 gallon) Seems if I add anything to the bubbler it causes slime on the stems no matter how dilute. Maybe PH to low? My second bubbler with 5 Blueberry cuts look perfect at day 3. I was running 2 18" 40W florcent lights and turned one off on each bucket. Maybe I have to much light and the cuts are trying to grow green rather than roots? ty