The RR is starting to plump up nicely. the shorter of the 2 has the bigger buds, the other plant having more bud sites. The Crystal meth plants look quite a bit different and one hasnt really started flowering yet? ah well, all the ladies look nice and healthy thats for sure!!!
I find generally auto strains can cope with high temps. I had mine reaching 32/34c on some days! But awesome grow, isn't it funny how the 2 plants look so different, wouldn't surprise me if they are 2 entirely different strains tbh.