I can't be 100% sure, but I believe it does cure at a spectrum that falls towards the visible light. Not just UV.
I was not able to cast any of the resin mixes successfully. Read it again
If you're printing with the form1+, I would stick to the formlabs castable resin. It gives the best detail and casting for me so far.
Those resin mixes was just an experiment to see if I can increase the amount of detail I was getting out my prints, but they were not castable.