I bought a trace mix at a hydroponics store that is close to CSM+B. But there is no mg in the mix. every other mirco in this mix is at the same percentage as CSM+B.
I live in an area that has some of the hardest waters in the country (Canada) our GH here is around 40. Can I assume that my water has enough MG in it already?
I live in an area that has some of the hardest waters in the country (Canada) our GH here is around 40. Can I assume that my water has enough MG in it already?