If you happen to know what the calcium, alkalinity, magnesium, nitrite, nitrate, and phosphate numbers are that would be helpful.
Also would be curious on flow and what type of light over the tank and settings. Torches in my experience prefer a little more flow.
I also personally keep my torch in around 130 PAR. If we know the light make and model, how high off the water and settings your running we may be able to get you an idea of what par your torch is under and if it is to much or to little.
Also after watching the video it appears you have enough flow but it all comes from one direction. Sometimes if flow comes from one side all the time it can rip flesh off on the side that is always toward the flow.