Hello all, I have been growing with a coco coir medium mixed with organic amendments that have been working almost perfectly with my style of growing. The only issue I run into during flower is that I always have magnesium deficiencies. When I water with epsom salt mixed, the plants like it and start going back to normal. HOWEVER, I am starting a new batch of plants soon and I want to incorporate epsom salt in my medium instead of watering it in. So, I am wondering if any growers out there have a good rule of thumb of how much epsom salt per gallon should be mixed within my medium. This is going to be an experimental run for me as I want to try implementing epsom salt within the medium in the hopes that it will prevent the magnesium deficiency during flower.