Spa panel

I would like to switch over to electric but i have a few questions. First of I rent and don't really want to buy a 30a gfci breaker to install in the panel. Would this setup work? Spa panel plugged into dryer outlet, then run the element running from the spa panel. Right now I'm going for the bare minimium (without frying myself). The only thing I'm not sure about is being able to run the spa panel through the 3 prong dryer outlet. Thanks

I am working on this exact same method. Follow my thread that P-J has been helping me out with.

https://www.homebrewtalk.com/f170/l...o-biab-single-vessel-electric-brewing-241745/