PH question

[SirSmksAlot]

Hello, so the pH of my water alone is sitting at a 6.5. after i add sensi grow a&b it drops to a 5. Is this normal??

[UrbZ]

yes totally normal. I cant say that is what those nutes are specifically gonna drop it too. But all additives change pH.

[9fingerleafs]

yes because most nutrients are acidic, you need some ph up, thats the name

[Campesino]

You can also use Alkaline additives to raise pH. If you use silica that is quite alkaline and should largely cancel the acidic effect of the nutes. I often use SM-90 in my water and it is a powerful pH up substitute as well. Silica should be added first, so is tougher to use to adjust, but SM-90 can be added last just like pH up.
Silica helps plants grow strong
SM-90 promotes root development, acts as a wetting agent (make water more easily available to the plant), as a result it noticeably increases transpiration, it also fends off many pests.

[gbauto]

Normal, as far as I've experienced. My well water starts at 6.9 and after mixing up my GH Flora trio-it's normally right at 5.5