I know that it's recommended to get a 2x or even 3x capacity SWCG based on your pool size, but I have also seen people here talking about running the AquaTrol near capacity. I'm looking at my remaining budget (just bought pool & supplies, but have to get pump/filter & SWG) and it's starting to get tight if I have to get the AquaRite vs. the AquaTrol. Based on the Pool Calculator, if I fill the pool to 48" (I assume the 52" is total wall height, not water depth), that would put me at about 17K gallons ... the AquaTrol is rated to 18K. Thanks in advance for the advice!