>>1988414Unfortunately care sheets from big stores like petco are not always up to scratch. It's better just to research stuff on the Internet.
Another thing could be the UV, did you know you need to have a UV bulb every 6~ months? As over time their light shifts from being UV so they're not longer useful even if they're still shining.
>>1988415The packs of seeds you can buy have plenty variety in them so you'd be safe with them.
>(summer highs are mostly mid-90s, but get to low 100s a couple days a year)Those are fine temperatures for most Mediterranean tortoises. Typically you'll want a a few hiding spots for them to escape the heat since 32C is basically "ideal" basking temperature, then they need cooler areas to regulate properly.