is 24hrs of light per day too much?

Discussion in 'Indoor Marijuana Growing' started by Gasaraki, Apr 25, 2006.

1. ok, so i've got some freshly sprouted "babies" and the more light the greater and faster growth right?
so is 24 hours of light per day too much? if so, what's the maximum light hours per day I can push? and if not, for how long can i keep this light schedule until I go to 18light/6dark or so?

2. <TABLE id=HB_Mail_Container height="100%" cellSpacing=0 cellPadding=0 width="100%" border=0 UNSELECTABLE="on"><TBODY><TR height="100%" UNSELECTABLE="on" width="100%"><TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNSELECTABLE="off">I'd use 24 hours of light if I lived on the sun, cause i'd be forced to. plants need dark believe it or not.</TD></TR><TR UNSELECTABLE="on" hb_tag="1"><TD style="FONT-SIZE: 1pt" height=1 UNSELECTABLE="on">
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3. NOT ALWAYS TRUE........ While seedlings less then a week old 24hrs of light will work wonders because all your plant (if using Flouros or CFLs) is really doing during this phase is getting its roots developed. With the 24 hrs of light your plant is constantly charging its batteries after 1 or 2 weeks yes 24hrs of light is just a waste of energy due to the point of diminished returns (after 18hrs a plant can no longer absorb light) and must convert its energy. If using a MH through all of Veg then just stick with 18/6 because HID lighs put out more then enough ligh energy

4. There is a divergence of opinion on this. Some say 24/0 is best, basically the more llight the better. Others say 18/6 is best, basically that 1) plants need rest and/or 2) they don't benefit from the extra light while it runs up your power bill. Even some proponents of 18/6 say 24/0 in the first couple of weeks gets the seedlings off to a good start.

5. Listen, I have been growing for the past 8 years. INdoors and out. Whatever you do, what you start out with is what you should keep doing through the seddling and veggie stage. If you change the cycle at all you can cause light stress, hermie syndrom, or even force the plant to onset, yes thats right, if you start out with a 24/0 cycle and then change it to a 18/6 it can cause the plant to think it is time to flower causing prematuer flowering and self polination. In my personal opinion I think that 24/0 is the best and have seed 25%increase in the plants grown on the 24/0 opposed to the 18/6 cycle. Some people say after 18 hours of light the plant doesnt take in any more energy. Well that is true but only in the flowering and pre flowering stage is this the case. While in veggie stage the more light the more growth. They both work fine but if you start with one keep doing it. Just make sure when flowering to go 12/12.

6. Ok mr. smart guy, let's see your 25% increase. Your such full of shit. Using 24/0 and then switching to 18/6 WILL NOT cause the plants to start flowering, and won't put that much stress on them. Plants need rest too, do you think when plants grow in the wild they get constant light? Nope. You have nothing to back up your statements, except bullshit lies. Even if you did do tests, they would never be 100% correct since no two plants are alike, even clones will vary in height, yield, etc.

7. I' no expert grower but wisdom suggests you should try to emulate nature as much as possible, for the plant and its ancestors have been/are and will be in some kind of balance with its enviroment.

Meaning the genetics are used to the night.
No night ever means no flowers you know that, right?

8. I think I agree. He doesn't sound like someone who has been growing for 8 years. That is the problem with this bulletin board; you can't really verify what people say unless you do it yourself. I have been growing for a few years and have grown many different strains. I always switch from 24/0 to 18/6 and put them from weak fluoros to the HPS and back and forth and so on. I have never seen anything that he has described. The answer to the question is whatever works best for you. Both 24/0 and 18/6 are both acceptable.

9. no reason to flip out buddy. let him think what he thinks you can think what u think.

10. Sure, but i'm not expecting them to flower when they're only 1 week old... and I read somewhere that keeping them under constant light for the first week or so gives them an extra boost in this stage. But it feels kind of agressive having them munching up all that light all the time, so I started wondering if it really makes a difference..

11. Anything thing that I say is because it has happened to me more than once. And yes if your plants are in a certain lightcycle for a period of time and then the lightcycle changes then it can have some really bad results. You dont want to just start up and changing your light cycle that is fucking stupid. I really dont know how you havent had any problems making the cycle changes you do (smknVTEC). Its just like what is said, outside is the natural environment, and how do you thing that the plant knows when to start preflowering stages? Its because there is a change in the hours of sunlight the plant is recieving. You can keep a plant alive for years keeping it in direct light for 24/0. But once you make a change in your lighting cycle then guess what, it thinks it time to start the preflowering stage. So trust me if your plants are into the veggie cycle it is safer to keep the same lightcycle the plant is use to until you are ready to flower. And for the ones that say im full of it, my experience has paid off for me and im not just some little 9x9 grower. Any body that wants me to send them pics of previouse crops send me an email at joeygandy@yahoo.com and I would be more than happy to send crop pics.

12. And for your little ranting, you said that IT WONT PUT THAT MUSH STRESSon your plants. But why would you risk putting any stress at all on any plant you jackass. Also for your little statement of no two plants are alike. That is true, but in generality if it is a pure strain and it is from the same mother plant then it will be the same. And you couldnt be more wrong about the clones, if you take a clone and grow it in the same lighting and feedings are the same as the mother they will be 100% the same. Its the same fucking genetics you jackass.

13. science.. I've only been in the game for about 3 years... and in my experience everything you say holds true.. and about the general idea.. I have personally always kept my veg room on 24 hours cause I never bought a timer for the light.. it's only a 600 in there now so it's not a big deal.. if I was vegging with something bigger I'd turn it off some of the time.. but to be honest with you .. when I have veg'd on less I've gotten less results.. especially with hydro.. with soil.. I'm not sure you'd see much difference. since they don't grow much anyhow.. but the responce that you get from small details in a hydro growroom especially would definitelly convince you to protect your plants from any kinds of stresses, as your looking for FAT and heavy sensimilla buds... PRODUCE!

14. damnit science you had to go and make me post again.. now that I have to argue with.. I have had cutting off of the same moma do drastically different.. only because of the auxins(growth hormones) being at certain areas of the plants.. but of course having your mothers growth extrememely even is the one way I've found to get clones to grow evenly.. with most cuts though I've had fairly uneven canopy's in Sog's due to half the clones having a lesser part of growth auxins, which the plant normally sends up to the growshutes.. by pruning we send auxins to lower branches... So, in fact, it is not a matter of genetics, it's a matter of energy, either way though you two dudes should be nice to each other..

15. No shit they are from the same genetics, but they still aren't going to be exactly the same, and the yield can still vary. Like i said, show some proof of your 25% increase, your definately full of shit. Even keeping a plant with the same light cycle, it will show preflowers if left in veg long enough. I realize i said 24/0 and then switching to 18/6 puts some stress on them, barely any actually since the plant won't go into flower anyways, especially at that young. I don't use 24/0 and then 18/6, when i'm vegging i keep them at 18/6 from when they sprout until i put them into flowering. Plants need rest, and i haven't seen any proof that shows that plants under constant light yield any better than a plant under 18/6. I'm not going to email you for pictures, because i know your full of shit anyways..but if you want to prove your point to me then go ahead in this thread. Even then there is no way to prove that you are right, considering two plants will never be exactly alike. I have experimented with some cloning before, i an no expert but i've taken several clones from the same mother plant, and had them yield various amounts that can vary up to over a half ounce. I'm not going to continue arguing with you, since you want to think you know it all.

16. indicasativa420.. you ought to slow down on who you say is full of shit.. most people who hadn't grown for ten years wouldn't say they had.. and you ought to heed info you get not shun it..

I personally can account that if you had a indo room that you were producing chronic in. using tables.. you would veg your clones for about 4-5 days before you flowered them.. if you did this with 18/6 you would end up with about 1 and a 1/4 pound for each 1000 watter/4x4 flood table, if you vegged them for 24 hours those five days you'd pull about 1 3/4 to 2 pounds easy with a good yeilder.. I'd say that would definitely be the 25% increase.. science doesn't have to show you anything.. He's shown himself.. he's trying to help people like you show themselves that they can do the same thing.. calm yourself.. Grow something that will calm your nerves....

17. Listen, People can argue over the fact of 24/0 and 18/6 and it really doesnt matter to me. And not all of my strains have produced 25% more on a higher light cycle. But if you get a good strain and provide it with a 24/0 cycle you will see a big difference. But dont take my word for it, try it yourself and then you can tell everybody what happened. You have nothing to lose and everything to gain. Or you can go around telling people im wrong when you havent tested the method. If you dont want to email me thats fine. You must not want the truth to much. And here for the last 20 crops ive done nothing but ebb and flo hydroponics so it makes a real big difference. Im not to sure about soil just because i havent done it in a couple of years. But the fact of the matter is that I have tested and proven my theory so you can say im full of shit all you want. Im the one reaping the benefiets. Another thing is that I havent bought seeds for about 4 years working off of the same clones for years and all of my plants produce within about 5grams of the same amount of bud all the same size.(AS LONG AS I KEEP FRESH BULBS IN). After about three crops I change the lights because they start to destribute light unevenly.

18. I am glad to see that someone can see that I am trying to help not to hurt. I have only been growning hydroponics for the last couple of years and those are my results. When I was 16 I started growing all soil, found dro, learned how to grow properly and been doing ever since. Atleast you know what your doing. Thanks for the backup bro.

19. I haven't even bothered to read most of the flames, but I think you all need to step back a bit.

It's going to grow either way. So why get huffy about it? If Joe Blow on the internet uses 24/0 and you think it's wrong, why does that effect you? And vice-versa.

To the orig poster: Either is fine. If electricity cost is a main concern, then 18/6 is probably your best bet. If you really want to squeeze every inch of growth out of your time, you might want to try 24/0. Either way you're going to get nice plants, and consistency and sticking with one schedule is going to be more important than choosing the "best" one.

20. pretty much