Temp on plastic primary?

[scrappy1979]

How do you guys keep tabs on the temp of a primary when using plastic food grade pals? Do the stick on aquarium ones work?

 

[TheBaconator]

Yup, that's what I use and it works for me.

http://www.amazon.com/dp/B004B4TS1S/?tag=skimlinks_replacement-20

 

[BrewinHooligan]

Same here, works just fine. Picked one up at WalMart for $2. Any pet store should have something that will work too.