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Back to Grow Questions
2 bulbs, 1 ballast
sativaman
started grow question 4y 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
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Answer
Med_in_Tropic
answered grow question 4y 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.
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Similar Grow Questions
Solved
Growlecule
Hi all!! Recently i bought a mars hydro pro epistar II 80, seems to be a great LED, plants loved it!! No my veg light is already broken?!?! Is there anything i could do by myself in order to overcome the problem? Really need the light ASAP😁✌️ Thanks in advance!!
Week 8
Setup. Lighting
6y ago
3
3
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
5y ago
2
3
Solved
girlwhogrows
what ppfd for 20/4 autoflower?
Just bought the FC-4800 and before this I had always measured my light using inches away from canopy however I want to learn how to use the light using PPFD. I have found average measurements online but what should I aim for for a 20/4 autoflower schedule please? Thankyou!
Setup. Lighting
2y ago
2
5
Solved
GorillaDoink
Too much wattage?
Is 300w too much for this early on? Going on week 2 just repotted today
Setup. Lighting
2y ago
4
4
Solved
Newbie90
Temperature too high
Hey 👋 how do uns keep temperature down? I’m usually in 28,8.nothing helps to cool it down tried everything.have wet towels in tent spray water co2 bags one fan air out one in and 2fans on each corner. Light dual spec 600w. I’m scared to water more. Thanks 🙏
Plant. Other
Setup. Strain - Autoflowering
Setup. Lighting
5y ago
9
8
Solved
bigmomma216
Light Height - Frist Timer! Jack Herer Auto
Calling all Growers! First timer here, 2 pots of Jack Herer Auto. Need some lighting advice...I just planted the seeds today. 1 LED light is 1000W and its about 18 inches above 1 plant. The other plant has a 300W LED about 12 inches above it. Is this an OK light height for the
Week 1
Other. General questions
Setup. Strain - Autoflowering
Setup. Lighting
5y ago
2
2
Solved
Sdubb78
lights on dim cuz of heat
So Ive only got my lights(mars hyd tsw2000) at 50% with dimmer and its almost 29 C during day. Am I worried?
Week 1
Setup. Lighting
4y ago
2
1
Solved
eurorack
Can I grow an Auto with a Photoperiod?
Thinking of growing a Skunk #1 Auto with a Photoperiod Fem Diet Durban, guessing I should start at 18/6 then drop to 12/12 when I want the Photoperiod to start budding? Thanks
Setup. Lighting
3y ago
5
5
Solved
IMCAGrower
Luces en floración
Debería quitar los foco cfl o los puedo sumar al sodio de 400w? No tengo problemas de calor.
Week 5
Setup. Lighting
4y ago
5
3
Solved
Noahbear
Are my leaves light stressed?
Are my leaves getting too much light? They seem light stresses. Any input would be great- thanks
Leaves. Color - Yellow
Setup. Lighting
4y ago
3
2
Solved
StDeacon
How much 11 litre pots for 0.64 m2
Hi folks, I have 2 Mars hydro ts600 and a tent 80x80x180, how many 11 liter scent pots can I put underneath?
Setup. Lighting
5y ago
1
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
5y ago
5
6
Solved
Tubington9
What percent should i have my ts1000 dimmer switch at?
Swapping a mars hydro ts1000 into my flower tent replacing my tmlapy 1500w. Should i start with the light at full strength? Previous light wasnt dimmable, just hung at recommended heights. Plants are in week 5 of flower
Setup. Lighting
4y ago
8
4
Solved
Igrowneil
Hey anyone else in UK having temp problems ... I've I switched to hybird lighting Today it's set as 12 hours HPS with 24 hours LED AUTOS are doing amazing 👏 none the less there 20" inch day 29 entering stretch, been TOPPED and ScrOG will be applied soon 😀 Solutions ?
Week 5
Setup. Lighting
4y ago
2
3
Solved
AccidentalB
Height Spider Farmer SE3000 week 5 flower
PAR increased to 600 PPFD, done by lowering the light to 35 cm above canopy. What do you think? is that too low? I'm using a Spider Farmer SE3000 (300 Watt). Anybody experience with this light? How high did you hang it from week 5 of flower to the end?
Week 13
Setup. Lighting
3y ago
1
1
Solved
PolishFarmer
How to rise up light power
Hi i have 30 day in my grow. Flo from 5days. I have sf2000 on 80%. When i should to give 100% power and when give for them another light mars Hydro Ts600? I want to do step by step. Any ideas?
Setup. Lighting
5y ago
4
Solved
Goodvibs
Hi guys. Has anyone used Photone - Grow app to help set there lights at optimum hight and brightness It says it measures par and lux but does require an in app buy to work with full spectrum LED. Thanks 🤙
Week 1
Setup. Lighting
4y ago
1
2
Solved
3lementa1
Should I dim 1000w for small space?
My grow space is 46"Lx67"Hx24"D. I have a dimmable 1000w mh and will switch to 1000w hps soon. For this size space, how high should I expect to have the 1000w? Is 100% too high? Pic is older.
Week 15
Setup. Lighting
5y ago
1
1
Solved
Cannabis_carlitos
What % to keep lights at during late veg
My question was around what power % I should have my lights at? My light is 300watts so I am assuming 50% = 150watts? Is this enough to continue vegging my plant? I have noticed the growth isn't as vigorous.
Week 11
Setup. Lighting
3y ago
2
5
Solved
GeminiCQC
Help with issues ID
I have a photoperiod in a 5 gal using BAS light. It is currently day 3 of week 4 , and I'm getting some damage on the tops. Would this be light stress or another issue? The tips are starting to go light green. Using the 200 watt light for the 2x4x8 ac infinity tent.
Leaves. Tips - Burnt
Setup. Strains - Photoperiod
Setup. Lighting
1y ago
2
2