chiller plumbing

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...

Hello Everyone, Hope everyone enjoyed the holidays and had a wonderful time. I've been trying to design this my reef tank for a year now, I went big and I am struggling with plumbing. I have like 500 tabs open in my PC and I am starting to get really dizzy trying to incorporate everything. I am...