Reptile & Amphibian Forums

I wonder what the consensus is on best incubating temps. for T. greaeca-ibera eggs would be? I want to produce females, and A.C. Highfield writes (1996) 32.5-33 C is the formula for females. What say other experienced breeders? I recently learned all my 8 T.marginata are males...a big dissapointment after 8 and 9 years of raising them from hatchlings. I want to produce females...safely!
Also, do you vary temps over the incubation period, or just keep it steady? Let me know what works, and maybe what did not if you experimented.

Any strong opinions on best hatching medium i.e.perlite, vermiculite, coconut husk? I have eggs incubating, and expect many more. Thank you, Vic H.

... your best bet would be split them eggies into different nesties (erh; incubators) and on a variety of mediums if you like, since time is of the essense and your advisor(s) might be living on the other side of the equator with differ settings than yours given the same formula... it sounds harsh but we did found it on the long route...

I wonder what the consensus is on best incubating temps. for T. greaeca-ibera eggs would be? I want to produce females, and A.C. Highfield writes (1996) 32.5-33 C is the formula for females. What say other experienced breeders? I recently learned all my 8 T.marginata are males...a big dissapointment after 8 and 9 years of raising them from hatchlings. I want to produce females...safely! 
Also, do you vary temps over the incubation period, or just keep it steady? Let me know what works, and maybe what did not if you experimented. 

Any strong opinions on best hatching medium i.e.perlite,

If your goal is to make females so you are not disappointed with all males fighting it out for territory in your rearing pens then here is what we do:

In the animals in which it is known, the gender is set at 1/3 of the incubation period. To be sure we catch it, we incubate at 90F for approximately half the expected incubation period. We then move the eggs to a cooler 83F until they hatch. I have done this with CDT, redfoots, sulcata, leopard, russians, hermans, greeks, stars and perhaps others I am not remembering.

I have been telling this regimen to people for a decade now. I am sure other methods will work. Why is it few, if any, utilize it? Why do all the breeders keep making males? Why?
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