How would it be locked out tho? It’s only had water at 6.0 it’s entire life and only Monday got it’s first feed? I had to flush it once before as well and put 5 gallons through each 10 gallon pot. I’m certain it can’t be lockout there’s no nute burn anywhere. The buds are beautiful and if anything I think I could slam it harder next round with the booster no? I could cut the molasses but doesn’t it feed the microbes that are dying off due to no topped nutrients? It literally has been growing since August and only has got water since Monday no joke.
Doesn't need to be nute burn... just messed up ratios will lock out certain nutrients. Its not just ph that needs to be considered the alkalinity of the soil also. Ph of nutrients going in does not mean the ph of the solution will be the same once added to the soil. Its a complex topic. Its possible the distilled water feeds can leach minerals if using distilled cal mag should always be added.
If I'm going to hazard a guess the alkalinity of the soil is now low, the foliar spray caused some burning and other issues. The molasses IMO should be added very sparingly to teas only not the soil and terp tea i wouldn't add any. If you had to flush before I think there may have been to much nutrients in the soil to begin with.
Its hard to say but I can say at one point they were very over fed. Ph of the water in the soil is likely and issue. The deficiencies your seeing can be from many things. But I doubt from lack of.