not cleaning related. i have everything up an running. I turned my return elbow to face the side in the tank so I get more flow with it. However I have some bigger bubbles that make their way to the surface and then pop which then sends water/salt on to the light. They are not microbubbles but pencil eraser size. Kind of like what pop bubbles/fizz does when you pour it and then pick it up to drink it real fast.
Anybody else with the 800s have this problems. Still have them when I point the elbow straight back and then it gets on the back glass.