Adding dichlor will help lower pH over time.
I thought so because:
I was used to (low PH) and increasing it was easy.
My routine was:
Balance water from the start in this order - TA, CH, PH
Then add 2 tsp of dichlor after using tub.
Add 2 tsp dichlor every two days of not using the tub.
Add 6 tsp of dichlor weekly for shock.
Check all levels weekly with Taylor Test kit.
Check dichlor level with test strips to make sure my routine is keeping the right amount of dichlor in tub before soaking.
I think this is the routine many use on this forum?
However, I'm thinking of trying the MPS before use and shocking with dichlor weekly.
Along with the ozone and silver ion, this is what my HS manual calls for when using the Fresh Water III program (ozone, silver ion, MPS).
This way I can evaluate both methods myself to compare smell and water quality.
The one thing I liked about straight dichlor and no MPS was the safe feeling of always adding sanitizer.