PLEASE READ!!! I DON'T RECOMMEND THE 2000W ELEMENT WITH THE PVC SETUP!!!!!!!!!!!! First it takes a LOT of electricity and most 110v don't like that much draw. I've redone the whole setup and used the 1500 watt element. The PVC has warped and leaked all my water out because I forgot to cut the timer off on the pump, the 2K element has burned itself into. Pump needs to be running anytime the heating element is on. No brainer, just a accident.
24 hours and the temp came up 9 degrees to 78F. That's quicker than I thought

Stock Tank build materials: You'll need a hole saw too

I couldn't find the blue one I got from COOP but it was the about $500 but:
https://feeddepot.com/product/10x28p...

Pump and saltwater system:
https://www.amazon.com/gp/product/B00...

Salt:
https://www.amazon.com/gp/product/B00...