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View Full Version : 24/0 >> 18/6



ojitos1985
03-04-2008, 04:58 PM
Hello guys, actually i am 24/0 my baby plants 6 Afgani and 3 skunk-thaihaze.....

will be a problem backing to 18/6, because actually i am using 45Watts CFL x 3 on 24/0.... i got ready my setup with 400watts hid, here are pics, it is really necesary use the hid now?

i know that there is a point in the growing of the plant, that absorb a really high amount of light, anybody knows when is it? about the 4 or 5 of real leaves or something, any overlight before this is waste of energy, i am right?

turtle420
03-04-2008, 05:02 PM
Hola! :)

If they're tiny/small, an HID is not the most 'economical' way to do it... yet there is not reason why it cannot be used.

Zandor would run his germinating seeds 24/0 so when they popped, they encountered light.

Once you're on your 5th set (if I am not mistaken) of leaves, you can start giving them nutrients.
The light per-se, I would go for the HID as soon as you start to see them stretch.
Remember it is a WEED. Weeds grow tall... they like that.

How much time since they popped from the seed?

Best!,

-turtle420 :cool:
.

ojitos1985
03-04-2008, 05:16 PM
thank for the answer man!

alright here we are with a pic, this is the afgani, they all look the same, they all popped almost at the same time, this plant is about 5 days older..
using 24/0 3x45 watts CFL of 4000k spectrum light, i can say it look healty, but i cant say it would be bigger if i would had put them in 400watts 18/6 from the begining...

how about?

turtle420
03-04-2008, 05:41 PM
They look perfectly good and ready for an HID to me! :)

Still not mature enough for nutrients.

As a suggestion, you should get a fan that oscillates (!), and set in so it blows back and forth. That forces the plants to strengthen their stems.
And once you get that fan, you will start blowing that loose top-soild all over the place.
So THEN what you can do is get small white rocks/pebbles/diamonds, and spread them over the top of the soil.
Water goes in. Soil stays put. Gremlins stay underground.

Nice!

grey1223
03-05-2008, 03:29 PM
Hello guys, actually i am 24/0 my baby plants 6 Afgani and 3 skunk-thaihaze.....

will be a problem backing to 18/6, because actually i am using 45Watts CFL x 3 on 24/0.... i got ready my setup with 400watts hid, here are pics, it is really necesary use the hid now?

i know that there is a point in the growing of the plant, that absorb a really high amount of light, anybody knows when is it? about the 4 or 5 of real leaves or something, any overlight before this is waste of energy, i am right?

Nothing wrong with using either light source. I've done 24/0 and 18/6. Very little difference in outcome for me.

ojitos1985
03-05-2008, 06:24 PM
i think it is miss understanding the question, i was asking if there is a problem backing from 24/0 to 18/6 lol

turtle420
03-06-2008, 01:14 AM
i think it is miss understanding the question, i was asking if there is a problem backing from 24/0 to 18/6 lol
No problem at all...

And, me being phsychic, I will answer your next question:

Yes, you can do the switch in one move... no need to "degree" it.

:)

psteve
03-06-2008, 01:22 AM
Hello guys, actually i am 24/0 my baby plants 6 Afgani and 3 skunk-thaihaze.....

will be a problem backing to 18/6, because actually i am using 45Watts CFL x 3 on 24/0.... i got ready my setup with 400watts hid, here are pics, it is really necesary use the hid now?

i know that there is a point in the growing of the plant, that absorb a really high amount of light, anybody knows when is it? about the 4 or 5 of real leaves or something, any overlight before this is waste of energy, i am right?135 watts of cfl is enough until all your plants together are bigger than 2 square feet. Then you'll need more light.
And 24/0 is fine until you switch to the MH. MH ballasts need to rest long enough to cool down once a day.

CashandPrizes
03-06-2008, 08:45 AM
I have used both 24/0 and 18/6 with no noticeable difference.

going 24/0 is really helpful if you need help keeping the temps up. and of course going 18/6, having the lights off during the hottest part of the day if you are have heating issues.

Mr. Clandestine
03-06-2008, 09:56 PM
Switching from 24/0 to 18/6 isn't a problem at all. I leave the lights on 24/0 while rooting clones, and then switch to 18/6 (or 12/12) with no problems. For plants in veg, I prefer 18/6 because it's simulates an outdoor environment better. I've also heard that roots don't develop quite as quickly under 24/0, but that may just be a myth.

ojitos1985
03-08-2008, 12:53 AM
thanks to everyone, really.

i followed psteve advice and noticed that all my plants together form a square nearer of two feets.... so here some pics my friends.

Alright, in the photos...one is my setup, other are were my plants are inside, and one photo, is a close up of one of the afgani, that seems to be lacked of calcium, wtf?, how can be a lack of calcium in a 1.5 week old plant?


By the way, i am repotting today with high amount of humus, i was thinking 50% humus, 25% perlite 25% organic earth. how about it bros?

Mr. Clandestine
03-08-2008, 02:15 AM
how can be a lack of calcium in a 1.5 week old plant?

Are you watering with distilled water, or water purified by reverse osmosis? If you're using tap water, then I doubt it's from lack of calcium. Also, if you're using any nutrients... stop. Your plants are too young still to be fertilized. Fill out as much information in the Troubleshooting Form (http://boards.cannabis.com/plant-problems/127058-troubleshooting-form-yay-you-know-you-wanted-one.html) as you can, and you might want to post it over in the Plant Problems forum.

psteve
03-08-2008, 02:45 AM
Your lights are MUCH too far away.
Put them about one or two inches from your plants.

socialistpete
03-08-2008, 05:22 PM
I've also heard that roots don't develop quite as quickly under 24/0, but that may just be a myth.
This is true as roots grow mostly during the dark period.

socialistpete
03-08-2008, 05:23 PM
Your lights are MUCH too far away.
Put them about one or two inches from your plants.
I believe in the last pic it is his 400MH in which case he wouldn't want it that close.

Twentyinches
03-08-2008, 05:53 PM
MH ballasts need to rest long enough to cool down once a day.

then nobody would ever be able to go 24/0 under MH, I read somewhere that you need to give your ballast at least a 15 min break once a week. I haven't found anything about once a day..? :jointsmile:

psteve
03-08-2008, 06:15 PM
then nobody would ever be able to go 24/0 under MH, I read somewhere that you need to give your ballast at least a 15 min break once a week. I haven't found anything about once a day..? :jointsmile:You can do 24/0 using TWO mh lights. Just have them rest at different times.:thumbsup: I've never heard of the 15 minutes once a week, and there are very few timers that will let you do that. Most folks I know let it rest for 2-4 hours per day.

Twentyinches
03-08-2008, 07:15 PM
You can do 24/0 using TWO mh lights. Just have them rest at different times.:thumbsup: I've never heard of the 15 minutes once a week, and there are very few timers that will let you do that. Most folks I know let it rest for 2-4 hours per day.

Well a quick 15-20 min a week thing can be done manually easier. But here I found this link on a hortilux bulb where it says weekly, and also on philips site with theirs as well.
http://www.eyelighting.com/tb/MH/multimetal/hoho/EQS-N-52-78-52876.pdf

I'm not trying to contradict you in any way but this could change a lot of things for a lot of ppl if you really had to do it daily.. I would hate do have to do that if i went 24/0 lol :rastasmoke:

Oh yah btw I'll be road trippin to your end of the country in may to look for areas to live in, I can't frekin wait! :D

ojitos1985
03-10-2008, 01:06 AM
Are you watering with distilled water, or water purified by reverse osmosis? If you're using tap water, then I doubt it's from lack of calcium. Also, if you're using any nutrients... stop. Your plants are too young still to be fertilized. Fill out as much information in the Troubleshooting Form (http://boards.cannabis.com/plant-problems/127058-troubleshooting-form-yay-you-know-you-wanted-one.html) as you can, and you might want to post it over in the Plant Problems forum.

well i think what caused the problem, i used about 90% perlite and 10% earth lol, but its ok my plants are fine now on 60% humus 20% earth and 20% perlite, also i perfored my pots so they are like swiss cheese, by the way the afgani is extremely bushy =X ....

Mr. Clandestine
03-10-2008, 02:01 AM
Glad to hear things going smoothly for ya! A 90% perlite mix would be a good way to go if, and only if, you plan on supplementing fertilizers exactly when the plants needed them at exactly the right time. Sounds like your new mix should be much more accommodating.

Take care, and best of luck! :jointsmile: