So, here goes...
Yes the Moderator is going to stray from the suggested care sheets here for a bit.
So the caresheets are a great guide for new keepers and are even useful for checking your husbandry. However, they are a guide. Having said this, I do not like when anyone speaks in absolutes. You do not always need to use a 12% Arcadia for veiled chameleons. I often recommend this, but you will not have animals falling off their vines due to a lack of UVB. Even a 6% Arcadia T5HO is an awesome choice, but I like to use 12% with veileds because they tend to be from more semi-arid conditions in their natural range. So, yes this would line up with the "desert" bulbs. For many years we did not have Arcadia to use and many animals lived long lives. We are just trying to provide the best environment for them. Truth be told the best thing to do is use a Solarmeter to check UVB penetration. I do agree with using a 6% for panthers, but that is just how I do it.
Now, as for the supplement schedule, seems like a bunch of bickering that isn't helping anyone. I hope I never come across as "know it all" as this (and if I do please keep it to yourselves

), and I am "friends" with Nathalie on FB and she is extremely helpful to so many, but one of my favorite sayings is that there is no 1 perfect answer to chameleon husbandry. She is likely, as I try to do, just giving the best advice for people to be successful. Again, there are no absolutes. I don't have any proof to support her claim about not needing D3 while using the 12% so I won't argue that, but I will say I would likely still use it bi-weekly (as I did with a 12% T5HO on Zapphod's enclosure.
As for my supplement schedule with veileds, I pretty much did the normal Calcium no D3 every feeding, Calcium w/D3 alternating every other week with a multivitamin. However, I don't do this with my Panther. I use Repashy's Calcium Plus LoD at every feeding.
https://www.store.repashy.com/calcium-plus-4-lod-oz-bag.html
I don't usually offer that advice to new keepers to avoid confusion, but it is what I think is the best option.
Yes, many chameleon owners that are able to offer their animals quality time in natural sunlight actually do not use supplements, just well gutloaded feeders.
I will even throw a little wrench into the discussion about UVB strength. I have seen some speak of cancers and other skin issues that may be related to the intensity of the 12% bulbs. So if that is a possibility should we be telling everyone that the can only use a 12% with veileds? Also, what about the fixture that we use with these bulbs. Are we getting the same amount of penetration using a single bulb fixture as opposed to a multi bulb one? Way too many variables to speak in absolutes, in my opinion.
That's my story and I'm sticking to it

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