I am new to the site (yesterday). yesterday i bought a new pool tesitng kit form Leslie's so i can calculate both Total Chlorine and Free Chlorine. When i got the new kit, i tested for all number and they were off from my prior test kit. Old test kit (a Pentair kit i got with my pool but updated reagents last year) showed Chlorine of .3; ph of 8.2; alk of 80. My new kit form Leslies (not the $70 one but the $29 one) showed readings of FC - .5; TC - 3; ph -7.2; alk - 140.
Can anyone explain the discrepancy? Which one should i follow? Am i going to try to raise Ph or lower Ph?; raise alk or lower alk?