Ambystoma Tigrinium Growth

[Reccetrooper]

Has anyone kept a record of their tigers growth rate?
My two are 5" and 7" respectively and with regular feeding and a constant temp of 59 to 65F, How much growth can I expect in say 6 months?
I've tried to locate growth info on the internet, but it seems that there is no data regarding my question.

 

[xxianxx]

They can reach five to seven inch in their first year. This will be the greatest growth rate, they will continue to grow till they reach their max adult size over the next couple of years. If you keep them cool over winter this will slow their growth rate but idk if this will impact their max size.

 

[Reccetrooper]

I keep them in our cool basement in my den that runs around 59 to 65 all year around. What should their ideal temp be?