Yea I was told also "DONT USE MiracleGrow" yada yada but it's the only soil thats available in my area at lowes. The MG soil I am using is "organic"...it's all organic..pieces of bark and stuff in there. It has low levels of NPK and no time release. It has a pic of a tomatoe on the front of the bag...and I've read that any soil thats suited for tomatoes will work for marijuana as the characteristics are nearly identical.
Yea so I dunno...Macgyver, thanks for the info but take your MG hating elsewhere please
If I do a grow in the future, yes, I will attempt LST and trimming and topping to maximize the area.
Also, what you're seeing i doubt is nutrient burn but rather a combo of heat stress, burn marks from lights being too close and a watering issue. If there is a nut problem it is extremely slight...especially since I just added nutes for the very first time at 25% strength 3 days ago....
I'm very happy with the plants considering it's my first grow and everything they've been through.