Oldluck,I have the botanicare system just above that one,the turbo garden with a 25gal rez 2'x3' i replaced the 14 6x6 pots with 2 gal hydroton, round pots x7.This system gives great results.
When did you put them in flower? There is a period at the very start of flower called the "stretch", usually plants double or triple in height depending on strain and other factors. It goes for about 2 weeks but a bit longer for longer flowering strains. Some strains such as the strain I have stretch alot, Ive seen an example where a plant put into flower at 5 inches became 5 feet after stretch. After the stretch the plant goes into flower production and the vertical growth slows considerably, Flower formation is slower at the start and there is a filling out period near the end where the buds really fatten up, so harvesting too early can mean you really cut back your yeild, as well as having premature bud. I told you earlier you could cut down on your N but don't do this yet if the plant is still stretching, wait until vertical growth has slowed, then you can reduce the N. If the bud is totally scorched you might want to trim off some of the dead parts, because dead plant material can lead to mold. Its not a big deal if you burnt it a bit, you wont get as nice a cola but the rest of the plant will be ok, plus it wont look nearly as pretty in a photoshoot lol.
You have more experience than me in growing, so youll have to take everything I say as possibly completely wrong lol, But that bud looks like it might heal considerably, theres very little necrotic tissue, anything that isnt dead could possibly recover quite a bit.
