By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Accept
2 bulbs, 1 ballast
sativamanstarted grow question 3y 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
likes
Answer
Med_in_Tropicanswered grow question 3y 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
Arcadios
Do I need to lower my lights?Do I need to lower my lights? I'm using a Kingbrite 240W Samsung lm301h and I just went into flowering period. I think the light is a bit overpowered for the room, so I've left it at about 21 inches above the tops of the plant. At this distance, all areas are getting 27k lux.
Week 4
Setup. Lighting
4y ago
3
4
Solved
burnoutdev
Grow lightsHi, I have really shitty lights for my seedlings and want to upgrade and have two options: MarsHydro TSW 2000 or LM301B LED Board 240W can you help me decide?
Links:
https://tiny.cc/Samsung240W
https://www.mars-hydro.com/mars-tsw-2000-led-full-spectrum-hydroponic-led-grow-lightSetup. Lighting
5y ago
1
Solved
kushman_4
Are these LED specs good enough to start my first ever small scale grow? HELP!Hi, are these LED specs enough to start a small grow (maybe 2 plants): Full Spectrum 200W with peak Intensity RED 630-660nm & BLUE 440-460nm
PPFD:
630.25 umol/s/m2 at 30cm
175.12 umol/s/m2 at 60cm
80.04 umol/s/m2 at 90cm
This is for a 3x3' tent
Any advise would be appreciated!Setup. Lighting
5y ago
3
3
Solved
Natrona
Light spectrum during veg and bloom periodsI have 2 1000w full spectrum lights. Each light has 2 switches-a veg button and a bloom button. This gives 3 settings for the lights-veg only, bloom only and both lights on at the same time. What settings should I use during Veg and during flower and how close should I hang them?Setup. Lighting
2y ago
7
6
Solved
LesClaypool_777
Light issueIm using 2 22 PAR LED lights for two plants of Purple Hulk. They are about 4 weeks old, and about 1 ft tall. This is my first time using an auto strain so im not sure about light and bloom change or when to do it if even needs to be done? Anyone got some pointers to help me?Week 4
Setup. Lighting
5y ago
2
2
Solved
theoracle
please heeeeelp :sgrow box : width 38, depth 42, height 86 for one auto flower the temperature is 32-33, the temperature in the room is the same, it is very warm outside. distance from light 38cm. plan to use lst teq .pot size is 10 l. what would you advise ?? and what you think about temperature?
Other. General questions
Setup. Lighting
Techniques. LST
5y ago
6
Solved
Clout_god67
Veg cycle-BloomingHi I ordered a mars hydro ts600w which is arriving either today or tomorrow. I also ordered light timers which I just switched from 24hrs to 18/6. My white widow is currently 5 weeks and my Alaskan purples are 4 weeks. I was wondering if I could start flowering by next week?
Setup. Lighting
4y ago
1
1
Solved
Madreefah
MARS HYDRO TS600 LIGHT STILL ON WHEN TIMER SWITCHES OFFit is a known problem i found 2 forum posts discussing it.
Different timers have been tried but it always remains the same.
Someone said with a mechanical timer the problem is solved I will try that as soon as I have one.
In any case, this is absolutely unacceptable.
Setup. Lighting
4y ago
2
8
Solved
czlok
Lamp distance at first weeksWhat is the best distance for my lamp (Mars hydro 150w) in Plants in this earliest stages?Setup. Lighting
4y ago
3
1
Solved
Mordf0kazzz
LED CFLYa alguien utilizo este tipo de bombillas? Tienem 130 watts cada una
Gracias
Setup. Lighting
5y ago
1
2
Solved
Gianemba
Automatic flowerlight?Hello growers
I got a tent full of automatic .my question is now do I need a flowering lamp or not . Can I boost the buds with it
Make it sense?
I got 150/w growth light and 200/w flowering light
Does the little bit more power anything ?Setup. Strain - Autoflowering
Setup. Lighting
5y ago
2
2
Solved
gkbasura
- I have a greenhouse ceiling that covers 50% of the terrace
- should I grow the plants always under this ceiling, or if it is beneficial to expose the plants to direct sunlight?
- If so, how old the plant has to be to expose it to the sunlight? I don't want to burn my seedling
Setup. Lighting
Setup. Seedling
Setup. Outdoor
5y ago
4
3
Solved
GreenleafSWO
Grow light height in floweringI have a lumatex ATS 200w led, I've it raised to max height but I've still only 10 inches of clearance from the canopy. It's flowering now and upward growth has stopped as buds are starting to fill out, will I be ok with this short distance?Week 8
Setup. Lighting
2y ago
2
4
