Micro bubbles in Varios 8 external UV setup

[Tanker Bob]

Hi all, I just installed an external closed system for my UV filter. I have a 1" input line to Various 8 pump to Aqua UV 57 to return line to tank. My issue is I am getting tons of micro bubbles. I have checked for leaks while running and I do not see any. Any ideas? I guess logic may indicate that there is air entering the system somewhere or can the pump create them on its own? I have a ball valve before the pump, the pump has union, ball valve between pump and UV, UV has union in and out, ball valve after the UV.

Should I let it sit for a while and see if a leaks appears? But this thing blows a ton of bubbles and looks like a fog. Appreciate any advice for a newbie.

 

[lapin]

air is trapped or it is sucking air
time will tell