uv plumping

Looking for advice on the best way to plumb this UV sterilizer in my tank. I have such a small space in my cabinet (now I see why people have their plumbing in another room), that it would be a squeeze, to say the least. I have also seen info saying mounting it on the exterior and running the...

Hi All, I have 200g system and ready to finish plumping but stuck in uv+ chiller part. Option1 is my ideal but I worry if t#4 will have back pressure or chiller output would not be go thrown return to the display? Option2 is more simple , output of chiller will be placed very close to pump2...