When should I start aggressive bloom feeding?

I am on day 21 of flowering (12/12). That doesn't include my transition week before flowering. But anyways i am on the "bloom" feeding schedule for my gh 3-2-1 nutes. I was wondering when I should switch over to the "aggressive bloom" schedule? and how much longer until I can look to harvest? thanks

and I dont have anything to check ppms, but i have been thinking about cutting back a little on what their feeding schedule calls for. any suggestions on that?

Don't if you do not own a meter!!!

Try the feeding schedules -> http://www.generalhydroponics.com/genhydro_US/feeding_schedule.html

I did my first grow without the use of a ph/ppm meter. I used the little dip sticks and simply used the feeding schedules as an idea of how and when to feed. Of course the individual plant is also a major factor in feeding. Some are sensitive while others can't seem to get enough of the stuff.

Well when i had no meters I used ts. I maxed out at 5 ts. After the first week of transition i would start them out on 2 and each rez change i would go up another until i got to 5. I am a GH user and my nutes were micro:bloom @ 1:1.

Invest in a PPM meter i got a cheap one for 20 dollars and i use it instead of measurements

i start counting after the 2week streach

That is the schedule that I have been using but it does not show when you should start each cycle in terms of days or weeks. I dont use ppms, i just that schedule from gh.