Start My Diary
Start My Diary
Log In
Start My Diary
Home
Threads
Diaries
Strains
Shorts
Questions
Contests
Growers
Seeds
Breeders
Nutrients
Equipment
Blog
English
Log In
Sign Up
Following
Follow
Brands
&
Growers
to get updates
Back to Grow Questions
2 bulbs, 1 ballast
sativaman
started grow question 5y ago
Does any devices exist to run 2 bulbs alternatively (like two 12 hrs cycles, one On, the other Off) out of one ballast ?
Open
Setup. Lighting
1 like
Answer
Med_in_Tropic
answered grow question 5y ago
It is possible to rig two timers in parallel with one ballast. Then you can program varying intensity to simulate natural day light with weaker mornings, intense mid-days, and ramping down evenings.
likes
Complain
Similar Grow Questions
Solved
Dargaville_Dukes
Will increasing light intensity restart stalled seedlings
Seeking advice from Mars Hydro TS1000 growers. When do you increase light intensity during seedling stage? I've had the light 30cm above the plant at 25% power since germination. The plants stalled 2 weeks ago. Can I get them going again by raising intensity or will I fry them?
Week 4
Setup. Lighting
2y ago
5
14
Solved
Chaweeder
Light cycle
I just put my seeds in the soil after germination, these are early miss, what is the best recommended light cycle, they are on a 24-0 but would like to hear more suggestions, TIA
Setup. Lighting
6y ago
4
Solved
SaltCity
Does my LED need more red spectrum for flowerin?
I have an HLG 100v2 LED grow light at 4000K. They say 3000K is better for flowering. Does it make any sense for me to add some cheap red LED strips to add red spectrum? I’d rather not buy another more expensive light if I can just supplement this one. See picture.
Week 8
Setup. Lighting
5y ago
1
3
Solved
Eliott42
Which height for my phase (veg/starting to grow) with MarsHydro TS600
What's the best height for veg with the Marshydro TS600 led? At start it was at 65cm (25.59055") and now I set it at 45cm (18"). Is it too close?
Week 1
Setup. Lighting
6y ago
2
3
Solved
Hisknibbs935
Hello,I'm gonna be running a test 6400k cfl vs sunmaster hps,been reading and reading and blue light crops up alot for veg so,I'm gonna grow one under the cfl one under the hps and one in the middle of the 2.will it shock my plant putting light schedule to 24 and adding the blue?
Week 2
Setup. Lighting
6y ago
2
2
Solved
TCH0808
Mars Hydro TS 1000 [3500K,100W, LED light] (Plants @ 3
Questions: See photos. 1. MARS Hydro TS 1000 will not support 4 cannabis plants, correct? Support = Obtaining full plant potential. 2. The Chinese 3000K lighting won’t “hurt” my plants in veg, right? It’s just simply isn’t the lighting that works for veg growth, yea?
Setup. Lighting
6y ago
2
3
Solved
AwfulBuddy
Photone app
Photone android app questions... i've read positive reviews about it, does anyone use it? to calibrate the reading do I need a ppfd meter or is the data sheet of the lamp enough? thanks forward guys 🔥💪
Week 9
Setup. Sensors
Setup. Lighting
5y ago
7
4
Solved
zunz16
light schedule change
I wanna change light schedule for my babies.. for now they run from 07 to 24 hours and I want to run from 18 to 12 hours so I would have dark period during day.. should I just leave it to run for 30 hours and then introduce new "night" time?? Plants are 4 autos 7 and 8 weeks old
Setup. Lighting
6y ago
4
4
Solved
Plumm
23 hours light per day?
I’m running 4 autos in a 4x4 tent on 20 hours of light per day. I’m thinking about the possibility of changing the light hours to 23 hours a day and 1 dark hour. I’m currently on week 8/9, I’m expecting it to finish roughly 12/14 weeks from birth. Any thoughts on this growers?
Setup. Lighting
6y ago
2
2
Solved
Noahbear
LED light recommendation
I am going to need a new LED light to hang from the ceiling. I am looking for a light that has the red/blue spectrum. A dimmer switch would be awesome- the ones I read about that include-seedling, veg and flowering settings sound amazing. Any recommendations out there? Thanks in
Setup. Lighting
5y ago
7
4
Solved
EthosMultipassMemberRovairok
is this a fire hazard
2 hids 600watt 2 led 520 draw no idea what the brakers look like and cant find out is this pushing it ive got nothing else big running a mini fridge and 2 mini splits this place was 2 diffrent rooms apartment they made into one and used to be a dinner so probly okay right??
Other. Other
Setup. Lighting
Setup. Other
7y ago
1
Solved
jimmminycricket
Can anyone recommend me a good led under 250$ thank ya the grow space is a 4x2 tent I was hoping to fit 8 autos not sure if that's possible
Setup. Strain - Autoflowering
Setup. Lighting
Setup. Other
7y ago
3
8
Solved
NoFaceNoName461
Lumatek 600W Power
Lumatek 600W Just started my first Grow ever,Im having some problems on knowing which power to use on each phase of the plant, as on the control for Lumatek 600, I have the option for 25% / 50%/ 75% and 100% wich one would be ideal to use and when? And what about distance?
Setup. Lighting
5y ago
2
2
Solved
Growin_it
UVB early flowering
Using a UVB light for two hours a day early in flowering cycle. Not sure if that is too much too soon? What are the warning sign of too much UVB in early flowering? Cheers!
Week 5
Setup. Lighting
6y ago
4
2
Solved
Harukisan
Spider Farmer SF1000 or Mars Hydro TS1000?
What would you recommend between Spider SF1000 or Mars Hydro TS1000? Both seems pretty similar, which one to chose? I’m planning on growing two autos at a time/or one photo, 70x70cm space.
Setup. Lighting
6y ago
5
6
Solved
NamasteDaze
OK to switch from 12/12 to 18/6 for auto in flower?
Is it OK to switch an auto from 12/12 to 18/6 when in flower (2 weeks)? I moved the plants from the attic which was way too hot and tried the 12/12 schedule to reduce the heat. Now that they are in an AC spare room wondering if it would be worth switching. Appreciate the support!
Setup. Lighting
4y ago
3
5
Solved
Myrcene
Critical Orange Punch vegetative state enough light?
Begginner Outdoor Grow. Any advices much apreciated. She seems to go slow, is the day sunlight enough at this stage ? thank you.
Week 1
Setup. Lighting
4y ago
3
1
Solved
Capo420
Lighting Change
Okay, I feel like I am asking a lot of questions so let me apologize for that. Lol. So my plants just seem to be behind most people's I see on here.Is it too late to change my lighting schedule? My theory was northern hemisphere gets many days 24hr lighting. Good or Bad?
Setup. Lighting
5y ago
1
1
Solved
Snooziecheesecake
Lighting question
I am running the Viparspectra 450w LED as my light for 4 autos in a 2x4 space. I am worried this isn’t enough, especially because of its lower levels of red. Should I upgrade to something stronger like a Mars hydro 600 or 1000 before flowering start?Or if not Mars something else?
Week 4
Setup. Lighting
6y ago
2
5
Solved
gruenerdaumen
Can someone here tell me if this light can stress cannabis plants: "SANSI 36W LED Plant Lamp Full Spectrum E27 for Houseplants Sunlight Grow Light"?
Setup. Lighting
4y ago
3
5