No liquid maintenance needed for AIO liquid cooler. It is sealed system and supposed to last 5-10 years depending on hours use per day.  The only light maintenance is to blow off dust on radiator fan.  
Hey, I was wondering with this system I can see that there is no air cooling available for the AMD Ryzen 9 5900x and the NVIDIA RTX 3080 10GB system. I have never owned a liquid cooling PC but would I have to clean this out and do any maintenance such as replacing liquid etc? If so are there any places where I can go to get a tutorial/guide on how to maintain the liquid cooling desktop? Thanks for reading this and any support or advice is greatly appreciated!
Alienware Aurora Ryzen