we utilise UVB. As novices, we try and ask questons as much as possible to try and make an informed decision as to how to go about something. Very early on in our research we came across reports of guys struggling to morph certain tadpoles, and rectifying the problem with the use of UVB. Also on our first amphibian forum there was a write-up all about uvb. The real clincher was Marcus and Grahams (Mworks) observations, and the revelation of optiwhite letting uvb through the glass. We already have uvb bulbs over each viv that has frogs, we don't actually use these bulbs until darts inhabit the viv,as they are said to have a useful life of a year. We use Bio-vitals made by narva -a German company they are a T5. Whilst talking to a scientist whom also keep darts here (he's done a lot of work with toxicology and dart toxins i believe), we got into a conversation about one of his theories that the angle of the sun, might have an effect on dart breeding cycles. From that he mentioned that he doesn't ever shut the blinds on his frog room. (I know I'm getting there..LMAO), I showed concern about the very early morning sun catching our vivs, he told me not to worry(sun only catches our vivs very early morning on one side of a north facing room) so we did some experiments he seems to be right the temperature explosion i expected in the vivs never happened, but every morning of full sun, as the narrow shaft of sunlight tracked across our vivs our auratus could be seen basking in it standing high legged, I thought that this might be of interest.
With regard to the UVB lights and the use of optiwhite...our take has been to make one of the top sections of our vivs(i think you call 'em euro vivs) in optiwhite, so there is a variety of light spectrum available to the frogs and they can choose what they want, i.e the bit to the right ect.
That way, if there is too much for them they can get out of it. I am a novice i don't have any proof about the benefits to our frogs, but it seems really worth trying to take advantage of these lights. So often i read about the importance of Calcium and vitamin D3 and UVB is tied up with this i think ,I'd rather try to cover all these bases now and hopefully never see things like sls, or try to work out how to solve it. Oh just as a side note for other guys over here, UK, optiwhite is only hugely expensive at SOME glass merchants, at others it is the same price as normal glass.