I have an intex 12'x31" pool overfilled so just estimating to be about 2100 gallons. I originally bought the drop test kit for chlorine and pH measurement and had some issues keeping pH up so I bought a 6 test strip test kit from walmart(I understand there are better kits but this pool is just for children under 6 to cool down in and splash around so I don't want to spend too much money on it). I've found that my TA has always been low affecting my pH so I read in pool school to add baking soda. Any suggestions on how much I should add? My 6 strip only tells me its low.