I did have some Chaeto in my sump and it was absolutely exploding. However, it was a downright magnet for the dinos and getting rid of it did help set them back a bit. I'll need to get fish in there before I reintroduce it, I guess.If you're getting algae growth it should keep the dinos at bay. I approached it like treating Ich with meds, I kept the temperature up until the dinos were gone, and then kept it there for another week just to be sure. I was making sure to keep my PH up (8.0-8.3) as I had read that dinos dont like the higher PH. I might've gotten lucky, but I wanted to share what had worked for me. I do believe the higher temperature is what did the trick, and the UV filter just helped to finish them off. (bought a cheap internal UV filter on Amazon, some brand called "Coodia")