Yes the uv should be fed from display or directly inside the DT to be most effective vs Dino’s. I think everyone who starts dry rock gets Dino’s it’s a rite of passage yr doing nothing wrong. When I got it I dosed neonitro and fed a ton. I also did 3 day blackout covering the tank with cardboard for darkness as well as uv in display it eventually worked , along with adding Dino’s competition such as macro algae and miracle mud.