what helped me was feeding fish more and stop water changes for a bit. seems that dinos thrive in low nutrient water. also ive heard raising ph can help. but be sure u have dinos and not diatoms or cyano.
I’ve been looking into it and it seems like it’s just diatoms ,caused by me thinking it was Dino and removing the carbon to dose Dino x. I changed the carbon and added phosphate and silicate absorber.