[JERP]

dunno about your actual question, but I do have some feedback.

I recommend against having a UV always connected just in case. Make a space for the UV in your setup and either have quick disconnects from the to the UV, or bypass and drain on the UV. You don't want the UV connected at all times for two reasons. The bulb will eventually get covered in slime and end up mostly useless by the time you need it. You will also have a a nice chunk of stagnant water in the UV that's been anaerobic since... well you get the idea.

I plumbed my system so I can plumb in a UV when I need it without getting wet, but the UV itself lives in a box in the garage. It stays dry so there's no sludge build up.