Resin tank some particle buildup and when to replace resin

Hello, I’ve been running my printer nonstop since I got it, and have started to run into problems getting the parts to stay attached to the base. I’ve begun to have prints fail and after clearing off the resin from the tray a number of times, I’m noticing a buildup of bubbles and maybe even particulate in the resin.

How do you know when to change out the resin? I hear people say “cloudy” but can’t say that I can notice cloudiness, just air bubbles.