Adding too much sugar without the extra oxygen that's required with it can very rapidly create anaerobic conditions, which is what I'm seeing, as the nitrogen is not being sunk but looks more like N toxicity, burning and pH skew. Adding sugars to a medium in temperatures above 77F ambient is a death trap for bacteria and disease vectors. There is a lot to understand that contributes. The sugar conversion fills the medium with CO2 over time, slowly increasing moisture retention as the thicker canopy develops. This can often drastically shift the SPAC dynamics between evaporation and transpiration, depending on your grow tent/space. Oxygen moves 10000 times slower in soil; it moves 500000000 times slower in soil saturated past a point. Akin to an oxygen lockout, aerobic becomes anaerobic very, very quickly. The medium is choking from too much sugar and not enough oxygen to process the amount of sugar you are throwing in, making it unable to sink or do much of anything.
"In a semi-organic grow"? What part is organic, bat guano is one of the most potent natural sources of ammoniacal nitrogen in that mediums its going to make initiating the autophagic response through N starvation almost impossible. Ammoniacal nitrogen sticks to soil particles like glue and will make regular flushing techniques useless. Never mix delivery systems unless you know roughly how it affects the process. TA Final Part is a forcing solution (or ripening stimulator). Instead of cleaning out the plant, it pushes the plant to finish its life cycle faster. It tells the plant to mature all its buds simultaneously while pushing it to produce more active compounds, like essential oils and active terpenes. high phosphorus and potassium combined with higher than normal % ammoniacal nitrogen 10% to 50%), the solution tricks the plant into sensing the end of its life. In nature, this prompts the plant to throw all its remaining energy into reproducing and maturing its buds.
Nature's signal to accelerate maturation.
Right now, your Guano is releasing too much ammoniacal, working directly against and in conjunction with the TA final part, which is already delivering a high level of ammoniacal.
Normally, a medium only holds 10-30% of its nitrogen as ammoniacal ta part boosts this to 50% as it triggers the "ripen" signal, but you don't want to keep ammoniacal above 30% for more than 7-10 days if you can help it. Its a trigger mechanism no more.
Your medium is like C:N 32:32 and not enough oxygen.
PK BOOST with 50% ammoniacal N signals floral maturation.
PK BOOST with N starvation signals nutrient recycling/sinking.
Very difficult to initiate a response when organic nutes are doing their thing. It takes 4x5x more water significantly to leach or wash ammonia out than it does nitrates. This can prevent triggering N starvation from having its normal impact. (bat guano)
Apply Final Part: Use it for the first 7ā10 days of the late-bloom window to finish off ripening.
Flush: Following the Final Part phase, flush with plain water or a clearing agent like Terra Aquatica FlashClean for the final 2ā3 days. If you prefer Advanced Nutrients, you would use Flawless Finish in this final week instead.
Flawless finish is a chelate made for synthetic grows with low CEC
In a fully organic grow you would use 32:1 to trigger N dump instead of flawless finish.(flush N starvation)
The way in which ammoniacal nitrogen reacts to carbon sugars is critical in how it acts during oxidation and is responsible for oxidizing leftover sugars that can make the buds smoke harshly. Limited ammoniacal equals limited oxidation of excess carbons held within tissues. Just so you know, it's not an anecdotal rule that's unresolved and unsubstantiated. It's called the Maillard reaction.
Normally, you can only use 10-30% ammoniacal nitrogen, but as harvest closes, it is beneficial to increase this ratio 50% of ammoniacal as it assists in steering the plant towards maturation. Rather than running 50% ammoniacal nitrogen continuously until harvest, use it in short, targeted flushes/additions (e.g., 7 days) to slow internode elongation and hasten maturity. Use alongside forced larger "dry backs" (allowing the root zone to dry out significantly between watering events). Raising the Electrical Conductivity EC of the medium to create mild osmotic stress. Widening the day-to-night temperature difference and increasing the vapour pressure deficit VPD.