pH down

[Lada]

I'm using lemon juice to lower my pH, but I'm little worried about additives (potassium disulfite). Has anyone used lemon juice for longer periods with no problems? Thanks.

[postmandave]

i have a friend who used lemon juice and the problem he had was that it didnt hold the pH for more than a few hours dont know if it would damage the plants i use phosohporic acid.pH down.the postman.