Of course, everything is strain dependent. Genetics come first. But Ive never met a strain that needed anything over 600 ppm, or 1.2 ec, especially past the second week of flowering when they stop growth to bud. Every 'deficiency' problem was really a game of ratios. Some strains Ive noticed need a heavy dose of N into flowering, and will start to wilt/curl/yellow early if they dont get their N in the early bloom period. These are usually termed "heavy feeders", but its really a poor label. They should instead say "heavy N feeders" or "heavy P feeders". At 6 weeks though, you should not be adding anything close to 900 ppm, let alone 1200 ppm. All these bud boosters, etc, are marketing schemes, all you need is a silica supplement, mag-cal supplement, gro, bloom, and something to keep the root zone healthy (BB, root conditioners, etc). You definitely don't need molasses or other crazy ones Ive seen over the years. A small dose of kelp concentrates will give you slightly more aromatics, but I would use it sparingly and add 1/2 to a 1/4 of what is recommended on the label in weeks 5-6 and make sure to flush accordingly. And growing is half the battle. Other common fails: 1. No end flush in pure water for at least a few days. I myself flush in the res for 4-5 days, then I also cut the main stem and stick the whole plant in a vase for a few hours. 2. Trimming fan leaves before drying. Fan leaves are like shields for your bud, then cover them from UV which degrades THC. They also act as timers - when they become crispy to the touch, that means that the buds have drawn all the sugars from them, and its time to fully trim the plant. If you look to India and other places that have been growing for millenia, you will notice that they keep all leaves on it until the drying is done. There is a reason for it. EDIT: you can make your own root conditioner using copper sulfate, at around 0.1% volume. Chlorine also works, but Ive never used.