@Joe - Awesome, looks great! We definitely get condensation inside and we usually put a dessiccant pack inside the enclosures before closing them. We’re hoping to have dessiccant available in our store soon.
As far as the reed switch goes, I would recommend checking our store later this week
Yes, condensation in an underwater housing is very common. It pretty much happens every time I forget to put a new desiccant pack in the housing after opening it.