Hotpoint 24 in. HDA2020Z Built-in Dishwasher "tube gritty particles" Questions

gritty film on my dishes? I ran cleanning products through it two times, changed the soap I'm using and it's stilld doing it. actually, it scratched one of my glasses. could be a hot water tank issue,

gritty feeling on them like bits of dried food or particles were left behind i use electrasol 3 in 1 tabs should i use something different ? what do you recommend ? any suggestion would be appreciated

Gritty film left on almost all dishes, rinse aid level seems to always remain at full, but apparently not rinsing well. The problem is hard water. There is a new product out called the dishwasher ...