Question about NZXT Kraken 360 RGB

Exactly as Lambo1 said. That's right.

Its an all included cooler, you don't need additional coolant

The coolant is already in the water cooling system. Simply install and get started.

What kind of coolant. This is an AIO = All-in-One water cooling systems are ready to install.

Don't get me wrong... Based on the question, I would advise you not to install this product yourself and to continue to inform yourself first.