We recently obtained a UV Sterilizer for our 125gal. It is a TurboTwist 3x 9volt. Our delima is that we have a CAP 1800 pump in the garage we were going to use as the pump. We looked it up on-line and the GPH is 650. We plan on hanging the UV off the side of the sump so there will be a short distance of tubing.

My question is...
1. Can I put a "T" on the pump to essentially get about half of the GPH?
2. Or should I put a valve to slow the rate of flow?

Thanks.