PH IS A GOOD PLACE TO START oops caps get that straight

next how do you clean your air and what is its proximity too the effected area or the ac? some a/c's hvae ionizers and ozone or corbon on top of what your running so both

does your water sit out? 40 ppm do you use a water softener, not much hardness maybe a touch of calmag but not till you answer water softner ?

i thought of some other stuff but smoked a bowl