stalled flowering plants

Breeder is green seeds and time is 7-9 weeks. Temps are 23 c. These plants are broaching 100 days. The ratio is 1:2 n to p rite now. Others suggested the same bout lite hours. It's too bad there so damn big, over 4 feet so i can't keep them in the tent.
 
Waira, I am feeding at a 1:2 npk ratio for that reason. I watched the grow videos at greenhouse seeds website to see a basic model. All the plants are approx 100 days old and the breeder recommends 7-9 weeks finish time. My pH meter was off point three, would that affect flowering that much??
 
Sorry some redundant info here, just figuring out this new tablet
 
...I should have asked before exactly how old they are! :doh: -my bad! it's an important clue... They may have been bred to be auto (fem's too?), but fairly often we see plants that just don't quite do it,.. the process isn't perfect, and they act instead much more like photo' plants; when this happens, folks seem to get good results treating them as such, meaning dropping light hours to 12/12, and tweaking the bloom nutes... using a booster takes the N-P-K ratio way past 1:2-- we're talking several to many times over! 2-45-28, 1-13-6, 2-10-10,... the big P-K jump can help kick things into bloom mode; it's not meant to take the place of your reg. bloom nutes totally either,... With Canna, being a multi part formula, it's not possible to combine them to get this spike; usually nute company's have some sort of higher PK product,...and you're now using the Bloom A+B, I assume? ... This said, it's the light hour drop that's most important, to alter the hormone balance into bloom mode! :pass:
 
Its just canna Coco a+b. I do have PK 13/14 I can add as well and I can drop the light cycle down too. Seems like they still wanna stretch.
 
... there are two formulas, Grow and Bloom, A+B, so I want to make sure you're using the Bloom- :greenthumb:... too much N right now will definitely promote growth over blooming, plus, with that stretch still going, sounds like the Sativa in her is talkin' loud! What lights are you running?
 
They are hi out t5s cause the plants are too big to fit in the tent where the hps is. Its prob grow, it came as a complete cycle, no need for changing as per instructions, just add the pk at the end. The lights top out at 250 watts, 6400 k, all fems.
 
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