Is this a magnesium def.?

[Myfriendis410]

@fourtwenty4_20

What is Jack’s

It’s a nutrient line by JR Peters that a bunch of growers on here are using. Inexpensive, high quality, full strength from seed to harvest, it’s the best stuff I’ve ever used.

Let's talk about Jack's Jack

I wanted to open this up to talk more about the Jack’s nutrient line up because I have some mixed reviews thus far. Most of grow experience has been with either organics and soil or with GH and coco. Prior to trying out DWC I did several runs with Jack’s. 3 photos in coco and 6 autos in coco for a total of 2 cycles a piece. What I’ve found is that my photos run effortlessly with the 321 regiment. My autos have run into complications with the Nitrogen content but ALL grows have exceeded my yields…