Hey,
I know they add it in on jacks 321, im just not sure if thats the same kind that you can buy at any store, i got some purpling on the stwms going into flower and trying to figure out a quick fix minus calmag, it will be a week or 2 before i can order some calmag, any thoughts?
I also use Jack’s 321. I used epson salt when I grew in coco using GH three part. I think I used 1 tsp/gal for more of a treatment, every so often. It will sure make a plant greener. IMO as long as you don’t go overboard with it, you should be fine. 
Any epson salt will work.
I think it’s a 1/2 tsp per gallon and it the same as what’s on the drugstore Shelf. Make sure it is all dissolved, mix with warm water.
Make sure it’s just epsom salt with no additional ingredients some companies add moisturizer or. Additionally stuff for smell
That and stir it in your dwc bucket and check your ph#'s.
Hey,
Alright sounds good to me, and should it make ph go up or down, any 1 know by chance?
