Yes that picture looks very clear... but being able to pull one clear pic out of your collection doesn't consitute having "crystal clear" water...
So you have zero experience with UV lights... you've provided quotes that have been the basis of your opinion and multiple flaws in the thinking have been pointed out...
So are you ready to admit you are talking out of your butt? If not you have to give creditable support to your theories... But so far you just babble nonsense and criticize that I repeatedly prove you wrong...
I don't mean to be so argumentative, but your misleading approach to using this forum does bother me...