I'm plumbing a reeflo dart for my return pump. My question is on the outlet side. It is 1 1/2". I'm gonna run it about 9 feet so where do I downsize it? And do I just go down to 1" or 3/4". The return runs over the back and top of the tank so I am not limited on size by s drilled bulkhead. Also the return is just gonna be on one side of a 7 foot tank so should I split it and run 2 outlets on that end or just 1. Thanks