Light intensity @start of Flower? +sex

DrDukePHD

DrDukePHD

Well-Known Member
Just flipped my plants last night, light (FC4800) has been at 12-15" & 50% dimming for the past 2 weeks. Time to crank up the light slowly?
20220628_130037.jpg

* Side note, how many days till i can reliably determine sex? While i got you here...

Plant #1
20220628_130802.jpg
***********
Plant #2
20220628_131621.jpg
***********
Plant #3
20220628_133150.jpg
**********
Plant #4
20220628_132500.jpg
 
S

Synchronicity

Well-Known Member
When I go from veg to the flip, I go from 400 to 600 PAR- to 700 to 900 PAR, so about a 30% increase?
I usually turn it up about a week before the flip.............. above about 1000 PAR, and I think you may need to supplement with CO2.

You should see any males by now. the females have the white "hairs, so I dont think you have any males...................

yo
 

Attachments

Star Dog

Star Dog

Well-Known Member
I don't increase the light initially I wait until they're responding to the light change then start to increase it, say around wk3-4 I'd be getting around 90/100% intensity.

The time to determine sex varies with the strain the age of the plant and your environment but normally 2 weeks is enough.
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
DrDukePHD said:
Just flipped my plants last night, light (FC4800) has been at 12-15" & 50% dimming for the past 2 weeks. Time to crank up the light slowly?
View attachment 5155868

* Side note, how many days till i can reliably determine sex? While i got you here...

Plant #1
View attachment 5155870
***********
Plant #2
View attachment 5155874
***********
Plant #3
View attachment 5155878
**********
Plant #4
View attachment 5155877
Click to expand...
I’m not familiar with your light so I couldn’t say. As far as sexing it usually takes about 1-2 weeks from 12/12 flip to tell. Males tend to show first.
 
HydroKid239

HydroKid239

Well-Known Member
I see balls forming on 1 & 4. Number 2 is looking like it may be female.. still to early to be definite. (I heard from an older fella that the crossed stipules indicate it's female from an early glance. He was right about my thug pug plant, but I'm not living by it lol) If I went by that.. I'd say 3 is male as well.. give them a few more days.. maybe a week to show their true colors.

I'm pretty positive on 1 & 4 tho.

Edit: I wouldn't crank it up yet. The light is close as it is. I'd be at 50% / 20" at the flip.
 
Star Dog

Star Dog

Well-Known Member
DrDukePHD said:
Just flipped my plants last night, light (FC4800) has been at 12-15" & 50% dimming for the past 2 weeks. Time to crank up the light slowly?
View attachment 5155868

* Side note, how many days till i can reliably determine sex? While i got you here...

Plant #1
View attachment 5155870
***********
Plant #2
View attachment 5155874
***********
Plant #3
View attachment 5155878
**********
Plant #4
View attachment 5155877
Click to expand...
For future reference you can take a clone put it in a jug of water then into 12-12 that way you only keep the females and you can continue vegging them to your canopy size, meaning if half are male you have half the canopy size.
 
S

Synchronicity

Well-Known Member
Im gonna stick my neck out and say no males. Yeow!!

I think you would have seen those sacks by now and you all can say I told you so later......

Please let us know if you see male sacs.........

:blsmoke:
 
DrDukePHD

DrDukePHD

Well-Known Member
HydroKid239 said:
I see balls forming on 1 & 4. Number 2 is looking like it may be female.. still to early to be definite. (I heard from an older fella that the crossed stipules indicate it's female from an early glance. He was right about my thug pug plant, but I'm not living by it lol) If I went by that.. I'd say 3 is male as well.. give them a few more days.. maybe a week to show their true colors.

I'm pretty positive on 1 & 4 tho.

Edit: I wouldn't crank it up yet. The light is close as it is. I'd be at 50% / 20" at the flip.
Click to expand...
If I end up with one female I'm happy, 2 im even happier. Of course the 2 biggest plants would be the ones you're calling definite males!
 
PadawanWarrior

PadawanWarrior

Well-Known Member
DrDukePHD said:
Just flipped my plants last night, light (FC4800) has been at 12-15" & 50% dimming for the past 2 weeks. Time to crank up the light slowly?
View attachment 5155868

* Side note, how many days till i can reliably determine sex? While i got you here...

Plant #1
View attachment 5155870
***********
Plant #2
View attachment 5155874
***********
Plant #3
View attachment 5155878
**********
Plant #4
View attachment 5155877
Click to expand...
Ya, but remember they're gonna stretch some too.
 
twentyeight.threefive

twentyeight.threefive

Well-Known Member
DrDukePHD said:
Dude its crazy how much bigger they got in
less than 72hrs. Now i have first hand experience as to why its called weed. I'm going to have to get a fix for the sides of tent sucking in, i know people shared fixes with me in other threads, gonna have to find em.
Click to expand...
Turn down your exhaust fan if it’s variable.
 
You must log in or register to reply here.
Top