WOW!!! I can just say GREAT
You have got really beautiful spiders
I have got A. geniculata and G. rosea as well, but they both are about 1/2" now. I can't wait until they would be this size like yours
Yeah the A.geniculata loves to fill her water dish with dirt so I gave up changing it daily. The dirt always settles to the bottom so it is not doing anything.
As for tips for getting them through the molt, I would just have to say keep the humidity around 80%. There is no proof that humidity helps tarantulas through molts but if anything it cannot be a bad thing. The humidity in her cage is 70-80% all the time and she hangs out right by her water dish 99% of the time.
Temps in Santarem, Brazil, one of the cities where Acanthoscurria geniculata is found native in, are ranging from 75F at night to 88F during the day. Humidities are ranging from 75% during the day to 90% at night. It thunderstorms there pretty much every day and has been for the last month or more. While most of the thunderstorms are scattered over the area, and once in a while isolated to certain parts of Santarem, there are at least a couple days per week of heavy thunderstorms covering the entire Santarem area. The weather is very similar in Para, only it's even hotter, ranging from the lower 80's to the mid 90's. It's storming there as well. And lastly in Amazonas, the weather is also pretty much like it is in Santarem, same temps, same constant thunderstorms!
Just figured you might want to know what it's like in A. geniculata's home town!