I've been on a slow learning curve with our Above Ground Salt Water Pool we inherited with our new home purchase. System is a Hayward AQ-TROL-RJ. As best as I can tell, the SWG Cell (Hayward Goldline Turbo Cell T-CELL-5) is no longer functioning. The voltage is reading in the 30s and the Amps are 0. Our pool size is 20,000 gallons. I am prepared to purchase a new SWG Cell for the pool, but have a question regarding size options. Can I install a T-CELL-9 (up to 25,000) to replace the current T-CELL-5? I realize it will be more money. The reason I ask is that whoever installed our SWG System, installed the cell horizontally, instead of vertically. I have no idea how this impacts the efficiency or life span of the cell. Would installing a larger cell make any difference? I am exploring workaround options so that I don't have to re-plumb the cell vertically (we have a deck around the pool which will make the plumbing and install a real pain as I'll have to do this all below decking). Ideas? Suggestions? Thank You.