johnb1963 I have 2 4' solacure UV-B tubes that I had used a while ago.... I cant say that there was a huge difference in the crop but I will say that the yields were huge and the material was potent and I started using them about 4 weeks into flower. Sounds like they did something but ???
The hard part for me is that the mention of STAYING OUT of the area when the lamps are on does limit me in the 12/12 window to do any maintenance, cleaning, watering.... So, being a chicken shit, I do stay away from stuff I am not supposed to be near. I am living long, despite some of the odd ball exposures I've lived through, in reasonably good shape, and have plans to keep that going so I am not risking something now...Of course, THAT'S ME and does not fully answer your question.
One other time I used them and had a timer malfunction ( I will never EVER use cheap mechanical timers again) and discovered the lamps had been on 24 hours a day for about 4 days. the stems and stalks turned beet red. The buds were sticky as all can imagine and the end results were exceptional.
IS THAT due to: the lamps, dumb luck, good genes, smart grow skills

, Go to the solacure web pages and read a few things there so you might be informed enough to make an educated guess because despite claims of greatness... You need to be able to justify that choice for you. Some times in this day and age, we assume the technology can put us leaps and bounds ahead.
If thats the case, look at the bullet proof windows on Tesla's new pickup truck !