B
badness
Guest
does anyone know if pro-mix hp has some sort of ph buffer or something in it? seems like half way thru every grow i have to flush w/ like 5 times or more of the size of the container, to get the ph where i want it (6.3-6.5). it takes hours for me to do this. don't remember having this issue when i used fox farm soil. any one else have issues with pro-mix?