alternative light cycles ... ?

[woogille]

i was just thinking about alternative light cycles,
i've read that if anything is for certain than its that - 24/0 is bad, though 20/4 might be a little better than 18/6 (?)
did anybody had a side by side experiment on that ?

also i was thinking about completely torn up stuff like - how a plant will do under say - 24/7 (light/dark), or 18/18, 24/12 etc...
i guess no one has ever tried thoes ?

 

[poindexterous]

I have done most all of my mom's and vegging on 20/4 for years now, it's my veg standard, as some strains are so "anxious" that 18 isn't quite enough, and it works just great, no problems. That said I never had any trouble with 24/0, but just thought it seemed.....un-natural, I dunno.

As far as totally non 24 hour based light cycles, always been curious, and read some about it, just never dared risk a round on it. I've got a timer that would do it, should take the chance one of these days!

 

[tebos]

There's 12-5.5-1-5.5 or 12-5-2-5 (safer), too: 12/1 lighting--Any truth or banana in the tail pipe?

 

[DHF]

There`s 8-4/8-4 that easily breaks up a 24 hr time clock without getting into fancier schedules that works well , and is time tested and proven....

Google "DLI/Daily light integral" and "DIF" and it`ll help you understand more about howta keep plants from triggering....

Peace...DHF........

 

[johndoe123]

There`s 8-4/8-4 that easily breaks up a 24 hr time clock without getting into fancier schedules that works well , and is time tested and proven....

Google "DLI/Daily light integral" and "DIF" and it`ll help you understand more about howta keep plants from triggering....

Peace...DHF........

Funny you brought this up DHF I used this schedule just a week ago for a week to introduce plants into the barebulb room before going back to 20 on 4 off. I could not find much info on it and tried it out for myself. it can be such a stress on the plants going from t5 to 5k barebulb.

 

[DHF]

Lumen shock does indeed exist JD , and if not big enough with substantial foliage and rootmass built , they`ll droop like a mofo and shut down due to massive amounts of transpiration , plus not drinking so as to hold moisture WITHIN the plant so they won`t fall over and die....now....

Slowly introduce em by circling em around 1 light on only , then move em with 2 lights , so on and etc. till they`re acclimated....Sooo many folks don`t understand and lose lots of plants by doin exactly what you did , but now after that 4 hr dark period you thought they were drooping from lumen shock , what you probably were witnessing was their first actual "sleep mode" and guaranteed they would've perked back up given enough time back under the lights AFTER the 8-4/8-4....

D9 veg`s this way already IN the bare bulb rooms so as to acclimate the plants to the bare bulbs from the get , but I always vegged my big plants with 400 horizontal MH bulb fixtures down on em as close as possible so as to stack nodes and build laterals so when they went into the bare bulb bloom rooms , they exploded in stretch FTW.....

Hope that helps....DHF.......

 

[woogille]

also - a good friend of my uncle's monkey - jeremy has some MJ seedlings, and he plans to grow them outside,
only thing is that right now outside is 12-12 and a little cold at night, so he puts them under a 20W CFL light, for about 20hrs, and when they'll grow just a little he plans to move than outside (he actually wants them to flower),

now, he has 2 kinds of CFL's -
1 - the one he is using ATM is a regular cold white 20W,
the second one is exactly the same - 20W only a blue CFL, just like this one - http://www.homedepot.com/p/Feit-Ele...ue-Spiral-CFL-Light-Bulb-BPESL13T-B/100539203
(only 20W),
so his question is - would it be any good to grow them seedlings under the blue one, and what would the effects be ?
he is only able to use 1 bulb at a time...

also - how far does the light should be from the plants ?
i've heard about 30-40cm, and it was like that,
but he just told me that if he gets the light a little closer, like 15 cm or so, the plants seem to get more light, and they look brighter (means more light imapcts the leafs)

thnx

 

[johndoe123]

Lumen shock does indeed exist JD , and if not big enough with substantial foliage and rootmass built , they`ll droop like a mofo and shut down due to massive amounts of transpiration , plus not drinking so as to hold moisture WITHIN the plant so they won`t fall over and die....now....

Slowly introduce em by circling em around 1 light on only , then move em with 2 lights , so on and etc. till they`re acclimated....Sooo many folks don`t understand and lose lots of plants by doin exactly what you did , but now after that 4 hr dark period you thought they were drooping from lumen shock , what you probably were witnessing was their first actual "sleep mode" and guaranteed they would've perked back up given enough time back under the lights AFTER the 8-4/8-4....

D9 veg`s this way already IN the bare bulb rooms so as to acclimate the plants to the bare bulbs from the get , but I always vegged my big plants with 400 horizontal MH bulb fixtures down on em as close as possible so as to stack nodes and build laterals so when they went into the bare bulb bloom rooms , they exploded in stretch FTW.....

Hope that helps....DHF.......

I should also mention that I put in my horticontrol flip to throttle it down to 3k flipping outer bulbs every hour while the center remains on.... DHF speaks the truth. When I first started 5k barebulb a year and a half or so ago they couldn't handle the lumen shock and I had to acclimate them slowly by upping wattage like ya sayin from 1k on up.