Recently purchased an Intex 12x24 Above Ground Pool. The pool has 2 intake lines coming together at a valve then a hose goes to the Pump. My question is can I close off one of those lines, or maybe at least reduce the flow from one of the lines. Looking for more Suction to use my Vacuum. I believe they went to the 2 lines because of a Law Suit from there being too much suction in the 1 line. thanks