Yeah I think you need to tighten up the husbandry a little bit. 3 lights is very excessive and can hurt their eyes. If you dont think you are getting enough light, switch to the 10.0. but only one UVB is recommended and sufficient. I use t5 because my cages are 5 foot in height.
Young chameleons often hang from various locations in the cage. it will subside once they get older.
It is great that you are doing plenty of homework, keep it up!
3 is excessive? I thought that having to pass through the screen would significantly decrease the uvb and uva that reaches the enclosure. Based on what ive read in a post by ChameleoPatrick ->
https://www.chameleonforums.com/definitive-lighting-thread-everything-you-really-need-know-80869/
I was under the assumption that this was not nearly enough.
I did not want to listen to a word he said as I despise this person with a passion, but he made some damn good points.
The bulbs came with out put readings showing negligible uvb beyond 9" and nearly non existent at 12". The basking spots are all 3"-10" from the bulbs in top 3/4 of the canopy.
The visible light from the uvb's is incredibly less that of the spot light and extremely less than the typical CFL I use for nursing sickly plants. I double checked and the light I use for the plants is a Feit Electric 18W 5500k. This light only puts out 1170Lumens and like I stated above is significantly brighter than the uvbs and the spot light combined. I cannot find the lumen output of either of the uvb bulbs or I would include this information as well.
What you are saying would make sense if it was the uv spectrum that was hurting their eyes and not the lumen out-put.
However like you said yourself the 5.0's don't exactly have remarkable ratings.
There was a recall issued for reptiglow 5.0 and 10.0 uvb's roughly 4 years ago. They were interestingly putting out uv spectrums that do not occur naturally and were causing snow blindness.
Sorting through this vast amount of info online and deciding fact from fiction is rather confusing honestly.
An interesting response was written by Dave Weldon, co-founder of the south bay chameleon keepers group, explains what I think you(and many many others) have based this belief from. In the article he wrote;
"The situation with CFL UVB lights (and UVB sources in general) is always changing and up-to-date information is sometimes difficult to obtain. Manufacturers have been known to change their phosphor recipes resulting in deadly UV output levels (power level measured in uW/cm2 and also UV Index levels) as well as deadly spectral content. Often times they don't have the right equipment to understand the dangers related to these changes until the reptile community begins to correlate the poor health conditions (photo-kerato-conjunctivitis [snow blindness]) and even death (documented UVB burns) resulting from these products. At best, some manufacturers have begrudgingly stopped distributing these products but very rarely ever actually pulled the product from the pet store shelves. ZooMed responded fairly well when it was discovered that their Reptisun 10.0 CFL and to a lesser extent their Reptisun 5.0 CFL were found to be producing non-terrestrial spectral content (parts of the UVB spectrum that don't normally reach the earth's surface [think: hole in the ozone!]) that caused photo-kerato-conjunctivitis. They eventually re-formulated their CFL phosphor recipe and fixed the problem. These CFLs can be identified by the date code in the lower right corner of the instruction sheet. If it is dated 2009 then it is ok and if it is dated 2006 then it should not be used.
As far as the Exo Terra Repti Glo 5.0 CFL, there is some evidence that may indicate that their product lines, including their linear tubes and mercury vapor lamps may be in question since they have, yet again, switched manufacturers for some of these products and phosphor formulations may be in question.
My advice, along with the majority of the chameleon keeping world, is to use the ZooMed Reptisun 5.0 LINEAR tube in any of the lengths from 18", 24", 36", 48" (18 and 48 being the most popular) and position it at the proper distance (usually around 6"-12") from the basking spot.
For those who have not been there yet:
https://www.chameleonforums.com
http://www.uvguide.co.uk/
http://pets.groups.yahoo.com/group/UVB_M…
See Ya, Dave Weldon
Co-founder of the South Bay Chameleon Keepers group (Los Angeles area)"