Nope. I know none of that. I know these tortoise were housed on some percentage of sand and their GI tracts were impacted with sand.You know for a fact these animals were well hydrated? Good diet, with plenty of fiber and not just greens? Approximately what percentage of their substrate was sand?
Same thing. Tortoise was under a cfl, and now has photokeratitis. What difference do those details make? None. Some percentage of them are burning tortoise eyes some of the time. If a person doesn't use them, their tortoises eyes cannot be burned by them. This is not "speculation". When this fact is coupled with the fact that they are a comparatively poor UV source, it makes recommending against their use even easier. Seems pretty simple to me, unless a person wants to make it complicated.Since you mention them, what brand(s) of CFL are causing these problems. How high above the animals were they mounted, and was it verified that only 1 CFL was used at a time? Not unheard of for someone to put 2 in a double dome to create a larger area without realizing that UVB is additive.
Even though the HO bulbs are quite powerful, I've still never seen one burn tortoise eyes.
You don't know that, and that is a silly point of contention anyway. Let's say your false speculative statement above is accurate. At what point does it become a risk? One grain of sand in an entire enclosure is not a risk. We can agree on that. What about 100 grains? 1000? Is 10,000 grains a risk? If not, what about 10,001? When does it become a risk in your mind? Do you have a scientific citation to back up your assertion of what point it becomes dangerous. How do you even know it is a risk ever?A small amount of sand can change the texture of the substrate. And it's not a risk in these amounts.
Now you are just being argumentative. I've seen lots of sand impaction cases, so I tell people not to use it. I've never seen a single case at any vet clinic or anywhere else of any problem with cypress mulch, or orchid bark. If you have, you should speak up and warn people about what you've seen and what your years of experience with those substrate have taught you.or is there risk in everything. Cypress mulch is much more dangerous, can kill without impaction. Bark can cause impaction with significantly less substrate eaten then sand or soil.
There is nothing arbitrary about dead tortoises with guts full of sand. "I" didn't do anything to make that happen. I am merely reporting what I've seen and learned. It has nothing to do with what I do or do not do. It has to do with what I have seen kill tortoises, and what I have seen not kill tortoises. I am glad that people don't share a dangerous practice that they have somehow or other managed to get away with. That is a GOOD thing for tortoises at large, and is not impeding knowledge in any way. That is called sharing knowledge. What YOU are doing is trying to undermine the sharing of knowledge that is saving, and will continue to save tortoise lives.You create an arbitrary line in the sand as it were. What you do is acceptable risk, and what you don't like is unacceptable. What it really does is impede knowledge. Those that have housed tortoises on substrates or soils containing sand, won't share that here because you put sand on the bad list.
When I see tortoises housed outside on dirt that has some sand content in it get impacted and die, then I will speak up about it. So far I have not seen that, and neither have you. Know what you have seen though? You've seen tortoises housed on sand die from sand impaction, haven't you?If sand, in any quantity, is a fraction as inherently dangerous as you say, you'd be telling everyone that has some amount of sand in their native soil to terraform their outdoor tortoise areas to a 100% sandless substrate. And generally, theres some amount of sand in most peoples soil.
Doesn't matter how much it costs, ask that 6th man if your tortoises life is worth the 'risk'.
Your argument seems to be based on the idea that you think this is just some arbitrary non-sense made up by me. You ignore simple facts that are obvious. Sand sometimes causes impaction. Cfl bulbs sometimes burn tortoise yes. You want to argue about the details about how when and why tortoises are being injured or killed. I want people to use safer alternatives. How long would you like to carry on with this?