Hi keepers, thanks for so many replies.
Updating:
I don't saw my aro eating nothing until now but I think that is possible that she is already eating because my feeder are disappearing in a relative high demand and I don't think that my payara is eating so much. Sadly I just can't confirm this no matter how many hours I spend in front my qt.
She is still in the middle section to the bottom of the tank but she is a little more active right now.
My tank kept the parameters. I don't did a WC in this weekend because everytime that I put my hands near the tank she stressed alot. My temp: 82,4F.
Just to remember: she was in a tank much littler than my qt (no more than 10 gallons). She isn't in my display because i'm reforming my apartment's floor. It's absolutely impossible move anything to my display until the next month.
I put some plastic plants and alot of top swimming feeders. Let's see.
Should I perform a wc?
Should I move her to another tank? My payara never touch her, and to be honest seems that the aro is the boss.
Should I increase the temp?
Should I pray?
Thank you all. Sorry for my poor english
D.