Originally Posted by EarthBound
You are already proving to be a great contribution to the forum.
Here is my input.
*The 30amp in the main breaker will protect the equipment.
*The 50amp GFCI spa panel is there for the purpose of protecting you.
You are fine with this setup, the 50amp is oversized for the application but there will be no damage to wiring because the breaker in the main panel will pop.