I have fairly soft water here, it's natural pH ranges 6 - 6.5, I do a half pack nutrients + micros at reservoir change, it adjusts the ppH to about 5.8± and the remainder throughout the week as needed, usually within the 3rd - 4th day after the change.
Now in week 4 of bloom, I have had to supplement with FF's Beastie Bloom (added in 3/4 tsp per 6 gal res).