distilled white vinegar Espoma Soil Acidifier or lemon juice for pH down?

[GuitboxTom]

Is it harmful to use white distilled vinegar, or Espoma soil acidifier, or lemon juice to bring pH down?
I have some N.Lights autos that got a slow start. I’m thinking due to soil pH@ 7.2

Soil:equal parts peat moss, garden soil (with aged chicken, cow and horse manure with wood stove ash all for many years (garden is awesome), perlite,vermiculite.
Pots: 4,5,3gal.
Nutes: 1/2strength 20:20:20 after week2 only 2x then Dyna grow 2x. Week4 used 1/2strength 15/30/15 once then Dyna Grow Blume.2x.
Grow light: cheep 60w led and 100w led panels.
They are at week 6.5, little but flowering.
Im hoping they go a full 10+ weeks to fill out.
My second grow. The fist was MANY years ago.
Looking forward to next time already. Then I’ll get the soil mix right, for a better start for autos.
Seems that your screwed if you make more than 1 mistake in the first week or 2 with autos. That’s OK I’ll get more than I can use and provide some to the 3 MS patients in my fam.

[BR2K]

I prefer to use pure (O.K., it's Walmart from concentrate "Natural Strength") lemon juice, as my late flowering PH down. It is more forgiving than the chemical PH down we use.

[GuitboxTom]

Thanks for the helpful reply.

[CaptainWiese91]

Organic lemon and use the juice.
been doing that for 8 years now. No problems at all.

[GuitboxTom]

Thanks for the help!

[PLreef]

I use lemon juice for ph down.
Autos can be jerks. The less mistakes the better. They don't like change. Personally I don't feed them for the first month or so.

[GuitboxTom]

Thanks for the reply. So you don’t start feeding till flowering?

[PLreef]

Typically I don't feed till the second week of flower.