The Grow Awards 2026 🏆
Start My Diary
Start My Diary
Login
Start My Diary
Home
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
Login
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
light cycle
Weedster
started grow question 6y ago
Hi, My grow is now under 18/6 light cycle and last night my timer got broken, she was 14 hours in darkness. What should I do now ?, Can I keep 18/6 cycle, or do I have to switch to 12/12?. I hope she dont freak out 😪
Solved
Week 5
Setup. Lighting
likes
Harrythehat
answered grow question 6y ago
dont worry she will be fine stay on what you are on she wont suffer it takes 3 days before any affects are seen so a few hours wont hurt at all
1 like
Complain
Selected By The Grower
Similar Grow Questions
Solved
Jmaninthemidde420
When yo increase light intensity
Is it safe to increase light intensity on this seedling yet? If not when would u increase light intensity? I have 1 main light on top and 2 side lights on it. I have 2 more side lights. I want to gradually add light from what I’ve heard. it get 50% extra natural light from window
Week 2
Setup. Lighting
3y ago
1
1
Solved
Johncann
Gorilla
Anyone do gg under 600w dual spectrum hps?
Week 8
Setup. Lighting
6y ago
2
2
Solved
lina13417334030
Free sample
Free sample!! Led grow light build with high level red wavelength which is used for flowering stage, now we need testers, if you need LED for flowering stage, message me. Pls share the message who may concerned, thank you.
Setup. Lighting
5y ago
1
10
Solved
Byteme
Currently have a blurple light, what light can i add for better flowering?
I currently have a Blurple light which is great for veg but bad at flowering what light would you recommend i add for better buds? or should i just buy one of them kingbrite models with samsung led ?
Week 3
Setup. Lighting
4y ago
1
7
Solved
Zweibel
Single CF Grow COB LED (300 W) sufficient for one plant?
Would like to know your thoughts on my 300-W COB LED (www.amazon.de/dp/B07Z678V5) I’m using in open space on a single plant. I’m not expecting huge yields with this lamp, but I am hoping it will be sufficient to bring a healthy plant to harvest.
Setup. Lighting
5y ago
4
4
Solved
Zer0xKira
I purchased two Vipar Spectra 300 LED Lights. I am only using one right now because i was concerned two would be too much for the seedling phase. Should I keep just the one light or Put up Both ? When would be a good point in the plants life cycle to put up the extra lights ?
Week 2
Setup. Lighting
5y ago
1
3
Solved
Mikewithgreenthumbs420
Placement of led lights not sure how far too hang light from girls
How far should led lights be from plant canopy first two pictures are the veg lights not sure how much distance I should have between Than my last two pictures are my bloom led light plants seem too like it fan leaves where shooting up I bend them every day
Setup. Lighting
5y ago
3
Solved
HAPPYCHEFF
Vegetative growth poor sunlight
Hey time grower here. started growing some seeds i found in some weed i had, plants already on soil on the first stage of vegetative growth but on my backyard i only have 8-9 hours of direct sunlight, will this work for a good vegeative growth? i know they need 18h at least :c
Setup. Lighting
1y ago
2
2
Solved
Wannabean
T5 "full spec" 100W x 4 and 1 x 200w CFL (Wedging Bulb)
High! I got 100w/total, 4x1 T5 Led-strips 40cm long 2cm wide (DIY-lamp, every strip is on a fitted plate 3cm between etch other). Is this lamp enough for 4 plants threw Flowering stage? I got a 200w CFL Wedge lamp, can i somehow combine T5with the CFL lamp in a smart way? Peace🙏
Setup. Lighting
5y ago
2
1
Solved
CharterCannabis
Autoflower Light Schedule
Wondering what light schedule I should run for this since it's an auto? I've seen 18/6 suggested but also full 24. Anyone have any suggestions/experiences?
Setup. Strain - Autoflowering
Setup. Lighting
4y ago
1
1
Solved
Ign33l
6 weeks of veg? I got only 3
Why do i see some auto or non auto diaries with 6 week of veg? When i grew non auto i just had them 3 weeks then switch the light time and changed 400w to a 600w. I learned that because they used to get hella big. And in Auto seeds i switch the spectrum after 3 weeks
Week 7
Setup. Lighting
6y ago
4
3
Solved
Weedster
light cycle
Hi, My grow is now under 18/6 light cycle and last night my timer got broken, she was 14 hours in darkness. What should I do now ?, Can I keep 18/6 cycle, or do I have to switch to 12/12?. I hope she dont freak out 😪
Week 5
Setup. Lighting
6y ago
1
1
Solved
Jakescalls
Led light
Hi guys, I recently purchased a 200watt LED of canna lights it doesn’t have the veg and bloom switches does this make any difference ?
Setup. Lighting
6y ago
2
Solved
RndmGrwr
Are these stretching? What should I do for the 2x top that barely sprouted?
Viparspectra xs2000. Just moved it to a 25" distance and 50% light intensity hoping it'll help, but unsure if it'll burn them? What should I do? Top 2x seeds JUST sprouted and are just barely above the soil. How to accommodate all plants regarding light intensity and distance?
Plant. Too tall
Setup. Lighting
Setup. Seedling
4y ago
1
2
Solved
Newbie90
Change of light 600w hps to 400w mh
Hi have a question atm have 600w hps light but temperature go crazy high even tho I have 2 fans air conditioning and humidifier. I’m middle of week 2 plant 🌱 doesn’t show heat stress but I was wondering if I can change light from 600w HPS to 400w MH ?? Or sud I leave it ?thanks
Plant. Other
Setup. Lighting
5y ago
5
5
Solved
THC123
LED Light Spacing
So my taller plants are starting to get bright green on top. My light is 25” from the tops. I measured today, and if I keep the lights that far away during flowering, I hardly have any space to grow them taller. It’s a 6’8” tent. The bloom light also isn’t on yet. What do I do?
Week 6
Setup. Lighting
5y ago
2
2
Solved
NarcissisticEcho
Lights. Please explain to a newbie
How much light does a seedling need? How many watts? Is it better to have one bulb but closer to a plant, or 4 bulbs and higher from a plant? Does it matter how many plants are under the light if they don't shade each other? Do plants "steal" rays so its better to have 1 plant?
Setup. Lighting
4y ago
5
4
Solved
Ema26
Anyone have any history with vibrating HPS lamps? Mine keeps making a buzzing/rattling noise. I’m thinking it’s the metal inside rattling on the glass so if I slightly rotate it it may stop? What do you think? Thanks!
Setup. Lighting
6y ago
4
3
Solved
HAPPY91
Maxsisun PB Grow Light?
Anybody use Maxsisun PB lights for flower?
Setup. Lighting
5y ago
3
Solved
slothasor
Light proof during veg?
Hey! If I am doing a 18/6 veg light cycle... Does it need to be completely light free during the 6 hours or will light leaks still cause hermie's like in flowering? Thanks!
Setup. Lighting
5y ago
3