Quote Originally Posted by wayward
The manufacturer wouldn't go through the trouble to make the fert even if it didn't work.
What kind of logic is that? That's like saying you should put tractor tires on a dirt bike, because after all the fact that they were manufactured means they work. Work, yes; in context. Applicable to this context, no. The manufacturer made it for a specific purpose. Houseplant food is made for slow growing evergreen jungle foliage plants. They don't need NEARLY the amount of nitrogen that a vegging cannabis plant does.
Quote Originally Posted by wayward
Besides, if you use a low P-K kind of fert, you'll have to boost those in bloom.
That's why all serious cannabis growers use two different base ferts, one for flower and one for veg.

You can unscrew a metric bolt with a metric socket.
You can unscrew an English bolt with a socket measured in 16ths.

Or you can just say the hell with it and use a pair of Vise-Grips for both of them.