I have had a 250 gallon hot tub for 3 months, we are useing dichlor for sanitizer. Water was Clear and chems balancned until we started shocking with non chlorine shock and adding "Spa Guard" treatments. Now the Alkalininty is about 250 and the ph is low, water has been cloudy. Two different pool shops have given us differing instructions from adding ph down to lower alk, to adding Borax... Advice?