I have a new 25 watt UV filter that I want to plumb inline with my return pump using nylon tubing. I want to order a Cepex ball valve from BRS. I'm not sure what fitting to use besides the barb threaded fittings for each side of the ball valve. The UV filter will be standing vertically attached to the outside right-side of my 125g reef tank. The part I'm not sure of is what fittings I need to attach to the end of the tubing to hang on the back of the frame and flow into the tank.