Interesting. I never grow from clones because I dont have room to keep any, and the shit you buy from a dispensary are all infested with every bug I can think of.
My plants tend to flip into flower very quickly too though, they'll be stretching to the stars in 1-3 days after flipping. Ive been seeing bud/pistil formation around 9 days into bloom in my last few plants ive grown too, which is great. My ladies are always fully mature and perky as can be before I flip them though.
I do have to wonder what IR even does for initiating bloom? Does it flip them into the flower mode (stretching) faster or does it cause buds to appear earlier on?
Nope, it's not much faster but it can be used to shortening blooming or to increase the daylength.
I use IR/730nm mainly to increase my light regime to 13,5/10,5h (=higher DLI=more bud, from week 3 - end of week 7) but it can also reduce the whole flowering time by a week when you stay with 12/12h all the time.
Fast finisher like most indikas benefit less from EOD threadment as long blooming sativas, so expect less than a week shortening for most indikas and more than a week for sativas. First two and the last few weeks I stay with 12/12h sometime less for the last few.
We have a thread about far-red and how to use it.
Short version is,
EOD-threadment with far-red triggers phytochrome far-red (or PhyFr) and that puts the plants faster/immediately into "night mode". This usually takes up to 2 hours without far-red and this 2h can be used to increase the light regime to up to 14/10h without the risk that the plants switch back into vegetative mode.
It is usefull when you want to increase your DLI without buying a new or additional lights. If you get 30Mol/d with 12/12 it would be 35Mol/d with 14/10h or 16,66% more light.
You need usually 2000-4000μMol for EOD threatment. More far-red would cause unwanted stretching or a reaction called SAS or shade avoidance syndrome and you really don't want it in your garden.
My 6 XP-E's are getting 300mA so 6x 1,9v x 0,3A= ~3,4w and they are ~45% efficient @300mA. That's ~1,37PAR/w.
Far-red has usually a QER of >5,5μMol/J so I get at least 7,5μMol/s PPF. My area is 10ft² or 0,933m² so I calculate with 1m² to keep it simple and use 7,5μMol/s/m² as PPFD.
4000μMol are needed so I need to devide that by 7,5μMol/s. That's 533sec or ~8min53sec.
Based on this calculation the duration of EOD-threadment should be 5-10min to get the desired 2000-4000μMol. Most peeps use it 5 mins before and after the mainlight switch off.
