Jack Classic nuts?

If I'm buying Jack classic nuts, 20-20-20 an bloom booster? Is there anything else I need if I get this type of nuts. I had the new 3 part AN. Grow, mirco, an bloom,. That stuff killed my plants slowly but surely did. An should I get the professional kind of just regular kind?

I haven't used it yet. But I plan on using the jacks hydro combo for my dtw coco grow. From my understanding you shouldn't need anything else as far as NPK. If you are growing hydro or coco I would recommend the hydro combo as apposed to the classic. It's specifically for hydro (obviously). Some cal-mag might be the only other thing to look into.

I'm growing is fox farm soil. I was gunna use coco or thought about it anyway, but I'm not really sure if its the way to go as this point . I hear Coco has nothing for the plant to feed off of so you have to use some kind of nut. With soil i wouldn't have to worry about that so much , I'm just worried with fox farm being so good for plants an adding the Jack classic it might over do it. So i'm going soil and Jack Classic . the bloom bosster an the 20-20-20. I heard if you do it this way you don't need to worry about your Ph or anything its a good blend of soil an nuts.