espom salts will help lower(i think,please check first,maybe wikki or just google it...) the pH,, 1 tablespoon per gallon, or half a teaspoon per L. thats an organic way. also next time you transplant mix in some fine dolimite lime into the soil if your worried about pH changes. It helps stablize the pH for the grow.
I work with bio bizz nutes, all are cerfitied organic. If you want to know stuff about there products I suggest sending them an email,,or aleast google it and go to there web page.. I did and they gave me all the info on the products that I requested and more.
Bio bizz nutes are defo organic, and I think there light mix is organic(check there website) and slitghy fortifed to supply just enough food for seedlings. I also use hydro ph up in water say once every new moon, and there has never been any problems,its fixed my ph too. Just a small drop per L is what I use and like i say with the nutes i use and soil I rarely have to use it. but as I say no ill effects.
