Hey guys umm, i tried looking everywhere for an answer to this but i can't find much. If i collect rainwater for my plants do i have to add like cal mag or epsome salts to it or something? I currently have epsom salts but no cal mag. I got biobizz Grow and Bloom, would these contain the necessary micronutes? And if so, does that mean i have to add nutes(and/or epsom salts) every single watering if using rainwater? Just a little confused, hope you can help. Thanks. Btw i just tested the ph of the rain and it says 8.0 ?? Is this bad?