P.H levels need help

my plant is doing ok at the moment but iv ph tested them and its reading 4.5 -6.0 i know this is bad but its only just changed. is was on 6.0.

Is there anyway i can add something to my water to bring it back to 6.0 or 6.5.

it seems everyone is telling to use baking soda but would this not affect the plant.

Any help i would appreciate thanks tiny

you should get hydroponic-friendly pH up and pH down. you can use vinegar or lemon juice to bring pH down and yes, baking soda to raise it ... in a pinch. But you should get the real thing and only use those other methods in an emergency.

Im Growing them in soil so is there anything else i can do to get ph up

Oopsie! My mistake - I meant to say plant-friendly. sorry about that