12/12 Only - Feeding

For my first grow, I will be using 12/12 straight from the get go since I'm growing a pure sativa (seed's website says max of 10 days of indoor veg).

I was wondering two things:
-When will the plants start to show sex since the plants are only in 12/12? (3 weeks?)

-Since there isn't a set veg & flower time, I'm sort of confused on how to feed. Should I veg feed until then buds begin to show then switch to flowering feed?

Thanks for your help.

MY plants took about 3 and a half to 4 weeks to show sex, I did have them on 18/6 for the first 7 days of growth though,

although im not sure that would make a difference.

from my understanding, no matter what your light schedule, they need to have a little while to develop the ability to sex.

use your veg feed until they show preflower, or maybe 2 and 1/2 weeks in.

you honestly wont need to feed for that time though, you could risk overfeeding, IF you do feed them in that short time, go 1/4 strength.

GL
Coma

correction, after 7 days of veg, it only took 15 days to show sex for me, which JUST SO HAPPENED to land on 420!!!!!

okay, thank you

I don't know if you got it worked out, but here is a rundown that I cut and pasted off another thread a long time ago, definately make a copy of it, I followed these rules to the letter and it has never failed. Am not sure who posted the info, so not trying to take credit for it, but here it is:

Clones and seedlings - 2.5ml/gal of all three parts
Veggie - 10ml/gal Flora Gro, 5ml/gal Flora Micro and 5ml/gal Flora Bloom
Early Flowering - 7.5ml/gal Gro, 7.5ml/gal Micro and 10-12.5ml/gal Bloom
Peak flowering - 5ml/gal Gro, 10ml/gal Micro and 15ml/gal Bloom.
Flush - 2.5ml/gal of each part for 3 days, then plain RO or de-chlorinated water w/ 1 tsp/gal (2.5ml) of molasses

ph;
Ph Sweetspot
Rockwool media - Ph 5.6 to 5.8

Coir - Ph 5.8 to 6.0

Hydrotron - Ph 5.8 to 6.2

Anything lower than 5.6 results in nutrient lock-out in any medium.

Nutrient Temperature sweetspot has always been 68 degrees F (given a 72 to 78 degree lights-on room temp and a 65 degree lights-off temp)

TDS Sweetspot
This varies according to where in the cycle you are. Suffice to say I follow this regimen:

Clones: 200-400ppm AFTER roots appear (nothing before that)
Veggie: 800 or so, although can go aggressive and boost to 1000 once the plant is well established.
Bloom: 1000 or so for the first couple weeks, then boost up to 1200 for almost any strain. Some strains (old NL#5, etc.) can take up to 1800 if you've got enough light intensity (over 55W per square foot) and CO2 (1100-1500ppm) to ensure the plant can uptake the nutrients.

k