I've been struggling with my TA and Ph. I try and raise TA to 120/125 and then lower Ph, the next day ph will be high again and I'll notice TA starting to drop. I use dichlor and shock weekly/ bi weeekly depending on use. Is trying to do this all in one day the problem? Should I allow more time in between the TA adjustment and PH? I don't know what to do. ???