@migizii Hi there. I cannot answer this question. I feel like colonizing can't be a good thing. These critters are slow growing, but they create a tough outer shell called a 'biofilm'. Many times this biofilm protects this bacteria from antibiotics, heat, chlorine, etc. I freaked out when I was told I had 4 colonies. But then, we have a member who had over 100! In all of my reading over medical journals and websites,; none really elaborated on explaining colonization. This sounds like a good question for Dr. Falkinham.