Thank you, I'm pretty sure I used this one...but I'm just an old stoner so I can't be too sure:
https://www.taydaelectronics.com/1n5237b-1n5237-zener-diode-1-2w-8-2v.html
or this one:
https://www.taydaelectronics.com/1n4738-zener-diode-1w-8-2v.html
but I'm pretty sure it's the first link....edit...