Was having major dino problems with a new system and tried every other trick out there. I read a theory about how the lack of biodiversity today can be a root cause. In the earlier days when I was in the hobby (early 2000s), dinos were nowhere near as widespread, never had them myself with multiple systems. Back then though, getting wild live rock from Fiji and Tonga was the norm so it was packed centuries of biodiversity. The bottled stuff today are very specific bacteria cultures. Based on this theory, I gave Garf grunge a shot because it contained decades of growth and was seeded from a bunch of sources. Maybe coincidence, but dinos cleared up in 2 weeks.