Epic 4x4 Flowering Smackdown : 96 Elites vs 288s

Or_Gro

Or_Gro

Well-Known Member
StickyBudHound said:
Lol, definitely.

How long are they from top nug to bottom right now?
Click to expand...
Following is re 96s, will comment on 288s after defol tomorrow.

Hard to say since all except 8/plant are laterals, but depending on strain the first 40 tops are 5-8” of solid 1st flush pistils, the next 20 have 2-3” tips with 1-2 pairs of buds lower on their stems. All of these are at or w/in couple inches of canopy top.

Pistils just starting to dry out on 96s, 288s will do so after defol - so haven’t started to swell yet....then round deux....

Girls are sure sucking down the nutes, but new leaf tips turn brown if ec is higher than 1.2-1.4 (840-980ppm), so i’m currently letting them suck nutes down to about 1 ec, them take them back up to 1.4ish. Doing about 3-4Lwater/day just before defol, so some major pumpage goin on...

Have my room dehumid set for 60%, tent with lights on (83-85F) brings rh down to upper 30/low 40% rh, with plants transpiring at current levels can maintain 50-55% rh in tents, with only 1 vent cracked. When defol releafs i’ll let rh drop into 40s thru harvest, as part of trying to avoid pm as buds get more and more dense.

They’re in f#ckin ganjagrowin heaven, man!
 
Last edited:
Or_Gro

Or_Gro

Well-Known Member
Or_Gro said:
Following is re 96s, will comment on 288s after defol tomorrow.

Hard to say since all except 8/plant are laterals, but depending on strain the first 40 tops are 5-8” of solid 1st flush pistils, the next 20 have 2-3” tips with 1-2 pairs of buds lower on their stems. All of these are at or w/in couple inches of canopy top.

Pistils just starting to dry out on 96s, 288s will do so after defol - so haven’t started to swell yet....then round deux....

Girls are sure sucking down the nutes, but new leaf tips turn brown if ec is higher than 1.2-1.4 (840-980ppm), so i’m currently letting them suck nutes down to about 1 ec, them take them back up to 1.4ish. Doing about 3-4Lwater/day just before defol, so some major pumpage goin on...

Have my room dehumid set for 60%, tent with lights on (83-85F) brings rh down to upper 30/low 40% rh, with plants transpiring at current levels can maintain 50-55% rh in tents, with only 1 vent cracked. When defol releafs i’ll let rh drop into 40s thru harvest, as part of trying to avoid pm as buds get more and more dense.

They’re in f#ckin ganjagrowin heaven, man!
Click to expand...
Btw, fwiw, i measured light intensity at res lid: ~25ppfd before defol, ~225 after...
 
Or_Gro

Or_Gro

Well-Known Member
diggs99 said:
How long have you been using the reds at lights out?

First time seeing this, am curious

As always, your journal and updates are top notch and full of great info.

Thank you
Click to expand...
Thanks man!

This is far red (735nm)...it runs first 15 mins after lightsout, i turn on after pistils form on tops (~21 days after 12:12, when big stretch is over).

Plants take a couple hours, on their own, to switch to “sleep” mode; a few mins of far red puts them to sleep right away.

Becuz the plants can get another 1.5 hrs of sleep, at least, some growers will just put them to sleep for a minimum of 10.5 hrs, and add upto 1.5 hrs to lightson time; which over most of the flowering period can lead to a shorter overall flowering period &/or bigger yields, due to the higher incremental hours of photosynthesis.

I’m already pushing my plants pretty hard, so i just hold lightsout at 12 hours, giving them at least an extra hour and 45 mins to do their nighttime processes.
 
diggs99

diggs99

Well-Known Member
Or_Gro said:
Thanks man!

This is far red (735nm)...it runs first 15 mins after lightsout, i turned on after pistils form on tops (~21 days after 12:12, when big stretch is over).

Plants take a couple hours, on their own, to switch to “sleep” mode; a few mins of far red puts them to sleep right away.

Becuz the plants can get another 1.5 hrs of sleep, at least, some growers will just put them to sleep for a minimum of 10.5 hrs, and add upto 1.5 hrs to lightson time; which over most of the flowering period can lead to a shorter overall flowering period &/or bigger yields, due to the higher incremental hours of photosynthesis.

I’m already pushing my plants pretty hard, so i just hold lightsout at 12 hours, giving them at least an extra hour and 45 mins to do their nighttime processes.
Click to expand...
Fascinating about the reds putting them to sleep faster, learn something new every day.

Thanks for answering that for me
 
Or_Gro

Or_Gro

Well-Known Member
diggs99 said:
Fascinating about the reds putting them to sleep faster, learn something new every day.

Thanks for answering that for me
Click to expand...
That’s called the initiator effect; the only reds you can use are far red; the other reds have the opposite effect, they “wake” up the plant!

I also take advantage of another effect of red light, the emerson effect, which combines certain ratios of red(~620nm), deep red (~660nm), and far red, during lightson...this boosts photosynthesis, too.
 
diggs99

diggs99

Well-Known Member
Or_Gro said:
That’s called the initiator effect; the only reds you can use are far red; the other reds have the opposite effect, they “wake” up the plant!

I also take advantage of another effect of red light, the emerson effect, which combines certain ratios of red(~620nm), deep red (~660nm), and far red, during lightson...this boosts photosynthesis, too.
Click to expand...
That's cool, thanks for explaining that for me.

So are the far reds you are using cobs or strips?

I love just how much some of you know about growing, it's crazy lol
 
Or_Gro

Or_Gro

Well-Known Member
diggs99 said:
That's cool, thanks for explaining that for me.

So are the far reds you are using cobs or strips?

I love just how much some of you know about growing, it's crazy lol
Click to expand...
No cobs,

strip for emerson effect: https://horticulturelightinggroup.com/collections/all/products/hlg-35

Bar for lightsoff far red:
https://www.htgsupply.com/products/growbright-far-red-led-light-bar/

Other companies make similar prods, you can make your own, too. Hlg makes a 6-diode far red strip; rapidled puts out a 4-diode far red puck.

A good thread about all of this is:
https://www.rollitup.org/t/the-far-red-thread.867665/
 
Last edited:
You must log in or register to reply here.
Top