Thank you all so much, I really appreciate the help. I'm heading to the LFS in the morning to get a new test kit just in case of the slight chance it is bad. It did sit out in 6F degree weather for a few hours when it got delivered last week. It's saying my calcium is now at 360 after doing another 20% water change with Marin Tropic Pro Reef salt. The Marin Tropic salt is usually around 430 but I can't verify a bad kit till I get a new one. I've always had large tanks and after a house fire I decided to get back into reefing again and three months in everything was going great until today, I never realized how less forgiving it is having a nano sized tank. This has been a learning experience today and I have to do some investigating so I never make this mistake again.
Thank you all again for your help!