Adopted old infested tank. Turn into QT?

[Semper.Reefing]

My buddy just gave me his old AIO Evo. This thing was previously infested with everything in the book... I planned on setting this up as a QT. After a deep scrub... Is it still even worth using as a QT or am I playing with fire?

 

[Semper.Reefing]

and I know I’ve already been playing with fire by not having a qt lol

 

[Katrina71]

Is it dry or wet?