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Auto Growers.....18/6 V 20/4

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Rufio
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As above guys, has anyone had any comparisons of the 2 light schedules?

Any benefit from the extra 2 Hours?

ive gone 20/4 for my first run but have nothing to compare it to. Got my electric bill too today which was interesting.....

Thoughts....

 
Posted : March 15, 2021 1:57 pm
Woolie, Macky, Hart and 18 people reacted
Chillbert
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OG
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@rufio yo bro how’s it going? Harvest time soon for you?

Can’t say from first hand experience with autos but what I understand is the point of diminishing returns is more than 20 hours light per 24 hour period.

18/6 saves a couple quid, plants may take a couple days longer to finish 

20/4 possibly the most light you should give for a return 

24/0 possible but surely a waste of some electric!? The plant cannot grow 24/7 so only use if very cold temps are an issue when light is off. Interestingly Geoff Lowenfells grows his autos 24/0 but he’s a soil scientist not a botanist! Lol 

hope that helps a bit.. someone here who autos a lot might know best case ! 

btw were you pleasantly surprised or the opposite when you read your electric bill? 

Time to pop some more beans 😗

 
Posted : March 15, 2021 2:21 pm
Macky, Constant Gardener, Hart and 27 people reacted
Rufio
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@chillbert plan to chop first plant at the weekend 😀 been meaning to update the diary. Will do this week.

Yea I was thinking similar to be honest man, probably little difference either way. I’m not keen on the idea of 24/0 but others that know a lot more than me seem to like it so could be like a lot of growing these things...more than 1 way to do it. 

I knew it was gonna be heavy man as the garage is cold and the heater is on a lot, humidifier also and the light is 300w too. 

At least I now know what the worst case scenario will cost, the bill I got was for jan and feb which is the most of these plants lives. Summer grow will cost less and at some stage I plan to do a proper job in the garage, build a room almost within the garage. 

 
Posted : March 15, 2021 2:27 pm
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yo bro for autos i always run 20/4, you can run an auto on 24/0 it wont do any damage to the plant as it has a set lifespan as such, you will just have some stress issues to deal with and maybe a slightly smaller yield. i find 20/4 is the perfect sweet spot you give the plant a little rest each day to allow for more vigorous growth the next day. as for 18/6 it doesn't really matter tbh. the whole point of autos is a fast quick harvest if your gonna grow 18/6 you may aswell just keep with a photo period.

 

my money is on the 20/4 tie frame, ive grown out plants under each of the schedules and i think 20/4 is the best in mho sir:gb:

 
Posted : March 15, 2021 3:13 pm
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WoodI2
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I've only done auto's, and I've only done 18/6. I like the "rest period". But maybe I'll try 20/4 like GB, I'm starting a new grow, maybe I'll try it.

 
Posted : March 15, 2021 4:31 pm
Macky, Chillbert, Hart and 15 people reacted

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greentomato
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Did not notice that much of a difference between the two if I’m honest.

Think 18hrs is enough and you might have slightly faster growth with the 20hrs but I like keeping my energy usage down so for me 18hrs is what I’m going with.

For the first week or so I did have a couple under 24hrs but with the lights dimmed to about 25% and that gave me some nice solid squat growth, then reduced light time as I increased the intensity.

 
Posted : March 15, 2021 7:26 pm
Woolie, WoodI2, Hart and 18 people reacted
Macky
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18 6 is enough IMO but you can go as far as 20/4, any more than that i think is over kill 


"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain

 
Posted : March 15, 2021 8:23 pm
Woolie, Chillbert, Rufio and 15 people reacted
WoodI2
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When I finally do photo's I'll probably pissed because they'll be sleeping all the time. Displeased  

 
Posted : March 15, 2021 8:37 pm
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Woolie
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Did the comparison years ago 🤔, cant really remember why I went 18/6 ,there must be reason I will check my old notes ,rather handy though as i can veg photos in there aswell ,also have a few week old seedlings in there ,my 18/6 tent does the hard work 😆 

Sucking ⛽

 
Posted : March 16, 2021 5:11 am
monkeydo, Rufio, Hart and 12 people reacted

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