Express Tube Anode

[Spoiledrotten]

Not a stupid question at all, SF! I don't ask stupid questions (), and I've wondered the same thing.

 

[Jonny Mac]

From the link on 'defender.com':
"NEVER MIX Zinc and Aluminum Anodes on the same vessel."
They bolded it, right above the metal description. Guess it's a bad idea...