Advertisements
  • Ali Bongo, Head Shop UK, buy best bong UK, Percys Grow Room
Notifications
Clear all

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

Rufio
(@rufio)
Caryophyllene
100 Likes
Diary Writer
250 Likes
500 Likes
Patreon
1K Likes
Republic of Ireland
2.5K Likes
Completed Diary
Forum Regular
Points: 4994

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....

ReplyQuote
Topic starter Posted : March 15, 2021 1:57 pm
Woolie, Macky, Hart and 4 people liked
Chillbert
(@chillbert)
Myrcene
100 Likes
250 Likes
500 Likes
Diary Writer
1K Likes
Plant of the Month Winner
2.5K Likes
Patreon
Stoner Movie Club
United Kingdom
5K Likes
Legendary
Points: 20055

@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 😗

ReplyQuote
Posted : March 15, 2021 2:21 pm
Macky, Constant Gardener, Hart and 7 people liked
Rufio
(@rufio)
Caryophyllene
100 Likes
Diary Writer
250 Likes
500 Likes
Patreon
1K Likes
Republic of Ireland
2.5K Likes
Completed Diary
Forum Regular
Points: 4994

@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. 

ReplyQuote
Topic starter Posted : March 15, 2021 2:27 pm
Macky, Hart, Woolie and 5 people liked
Green Beard
(@green-beard)
Linalool
100 Likes
250 Likes
500 Likes
1K Likes
Patreon
Completed Diary
2.5K Likes
Diary Writer
Student
Stoner Movie Club
Republic of Ireland
5K Likes
Respected Member
Points: 13656

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:


"Don't judge each day by the harvest you reap but by the seeds that you plant."
Robert Louis Stevenson

ReplyQuote
Posted : March 15, 2021 3:13 pm
Macky, Chillbert, Hart and 3 people liked
WoodI2
(@woodi2)
Linalool
100 Likes
250 Likes
500 Likes
1K Likes
Pirate, no country
2.5K Likes
Diary Writer
Respected Member
Points: 10142

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.

ReplyQuote
Posted : March 15, 2021 4:31 pm
Macky, Chillbert, Hart and 3 people liked
greentomato
(@greentomato)
Geraniol
100 Likes
Percy Grower
Points: 470

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.

ReplyQuote
Posted : March 15, 2021 7:26 pm
Woolie, WoodI2, Hart and 4 people liked
Macky
(@macky)
Beta-Pinene
Mentor
100 Likes
250 Likes
500 Likes
1K Likes
2.5K Likes
5K Likes
Grow Off Diary
Youtube 1K Views
Diary Writer
Amazon Patrion
Patreon
Completed Diary
Complete Grow Off Diary
Facebook Rep
Instagram Admin
Writer
Stoner Movie Club
Australia
Veteran
Points: 92408

18 6 is enough IMO but you can go as far as 20/4, any more than that i think is over kill 

Join us live every Sunday for High on Home Grown!

ReplyQuote
Posted : March 15, 2021 8:23 pm
Woolie, Chillbert, Rufio and 3 people liked
WoodI2
(@woodi2)
Linalool
100 Likes
250 Likes
500 Likes
1K Likes
Pirate, no country
2.5K Likes
Diary Writer
Respected Member
Points: 10142

When I finally do photo's I'll probably pissed because they'll be sleeping all the time. Displeased  

ReplyQuote
Posted : March 15, 2021 8:37 pm
Hart, Moglo, Woolie and 3 people liked
Woolie
(@woolieback)
Myrcene
100 Likes
250 Likes
Patreon
500 Likes
1K Likes
Grow Off Diary
Member of the Month
Diary Writer
2.5K Likes
Stoner Movie Club
Wales
5K Likes
Completed Diary
Complete Grow Off Diary
Legendary
Points: 21486

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 😆 

Suckin on Diesel

ReplyQuote
Posted : March 16, 2021 5:11 am
monkeydo, Rufio, Hart and 2 people liked

In our cannabis growers forum, we have guides to growing cannabis, cannabis grow dairies that cover growing weed in hydroponics, soil and coco. Find the help you need, by either, using the search box, or asking for help in the forum.

Our cannabis growers website also has competitions where you can win free weed seeds. As a member you will also have discount codes for cannabis seeds, and LED grow Lighting.
Our Cannabis Growers Forum is for educational purposes and we encourage our members to check their country of residence legislation before germinating a marijuana seed.

This site is here because we want to help you grow your own cannabis for personal use. Therefore, any member who is suspected of growing cannabis for commercial gains will be banned immediately.

Please read our forum rules, and enjoy the site.

Percys Grow Room Facebook Page, Cannabis grower forum fb page,
percys grow room twitter icon, cannabis growers forum
pintrest logo percys grow room, cannabis forum
percys grow room instagram logo

Find us on all social networks! Just search for Percys Grow Room