WTB Chiller for Quarantine Tank

[Reef Box]

Looking for a small chiller for a 20gal Quarantine tank that I am setting up. total water volume will be 30-40 gal. I'm thinking 1/10 or smaller. I know that will be an overkill but I'd rather overkill than overheat. THANKS!

 

[vinnguyen]

I have Brand new one !

 

[Reef Box]

I have Brand new one !

What size and what are you thinking. I know it's brand new but I'm setting it up on a quarantine tank so I don't want to blow too much.