filled my spa up with very hard well water and i`m having a real tough time getting the ph into normal range i`ve used lots of ph down let it circulate for a couple of hours and it still reads high, my question is how much of this ph down do i have to use and if i use too much will it harm anything?

if you have a place close by who'll test water that is best. without that, balance Alkalinity first, then pH, then Calcium Hardness, then chlorine/ bromine.

problem is the tub is at my cotage and i won`t get out there till friday so if i have the water tested today it`s going to chane by friday and i`m at square one, the alkalinity is high so i use ph down to try and balance that but it is unreal how much ph down i have used and the ph has hardly moved also

Keep adding PH down- Some wells in this area need a pound or two of PH down. Just keep adding, a few teaspoons at a time, and re-test often. When using amounts that high, it may take 24 hours before reactions are complete.

hard my water tested they told me muriatic acid is the only way to go an oz at a time

I too fill my spa from a rural well via a water softener. the water tests off the charts high alkaline!!!! takes almost two pounds of ph down to get it neutral. I've tried a liquid product that knocks it down faster but it doesn't stay down. I am concerned about using so much ph down dry powder that it might cause skin trouble.????