Our pool is roughly 24,500 gallons, above ground. CYA is at 19, Chlorine 0, PH 8, Alkalinity 28, hardness 108. What do I do first, Adjust the Alkalinity and CYA? Should I add the baking soda to bring up the Alkalinity? And if so, won't that increase the ph too? And then I'd have to buy something else to lower it? Would love some cheap suggestions. Thanks!