Threads is in beta — try the new feed
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 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.
likes
Complain
Similar Grow Questions
Solved
Sugahmama
OMG
My Timer malfuntioned and gave them over 22 hrs of light?I was wondering why they kept growing this fast and big until i controlled the system and noticed they get to much light and stretching this hard. So i turned the hrs down to 16 to stress them into blooming, will this Work?
Week 7
Buds. Other
Leaves. Too many
Setup. Lighting
3y ago
8
6
Solved
Blueboy2019
5 hr power cut in flower
This morning my lights come on as they should but then I had a power cut for 5 hrs after the light been on for 1 hr in the morning. I'm 2 weeks into flower on a 12/12 ... What should I do? Start a fresh 12/ hrs so change up my timer or just leave them as their are??
Setup. Lighting
7y ago
3
Solved
Kershaw1231
Is this OK?
Hi my tent arrived yesterday so I put my 6 auto plants in there my auto nl and 5 other auto seedlings what I need to start diary on them but I run light 18/6 schedule on at 6 am of at 12 am but I've changed today to of at 1pm on at 7 pm is that OK? ?
Setup. Strain · Autoflowering
Setup. Lighting
Setup. Seedling
5y ago
4
Solved
balecryan
light distance and amount
how far should my grow light be from my seedlings, they are currently 3 inches tall with a 600w full spectrum LED bloomspect about 20 inches from the top of the plant. also is a 16-hour cycle ok?
Setup. Lighting
6y ago
4
4
Solved
GhettoStyle
And if it's not difficult, tell me how I should control the light at all stages of growth from growth to the end of flowering!? at what distance from the plants should the light be? and what power adjustments on the driver should I make?
Other. Other
Setup. Lighting
Setup. Other
4y ago
3
2
Solved
MissMyrcene
Seedlings
Woke up this morning and she’s grown a bit from yesterday. 4cm tall now. HLG 135 was dimmed (to a level that was comfortable to look at, I have no way of measuring output right now) and is 26” away. I know it’s early but I have no experience!
Week 1
Setup. Lighting
7y ago
6
4
Solved
43215gehr
Lux Light Meter
Hi Growers. Has anyone used the Lux Light Meter App for your grow lights ?
Setup. Lighting
7y ago
1
Solved
haze_gino
LED distance meizhi 120 watt
hi guys, my question is… how much distant i should use my meizhi LED 120watt ( real watt ) from my plant? currently i using it at 50cm distance from the plant.
Setup. Lighting
Setup. Other
6y ago
3
3
Solved
JuanCarlos97
Hello fellow growers :D thx a lot Firstly, is the reason why my plants (especially cookies) are very slightly curling/folding at the ends of the leaves because the LED is too powerful?(Reason to be worried?) Secondly, should I start adding nutrients? Just 1/4 of Bio-grow for now?
Week 2
Leaves. Curl up
Setup. Lighting
Feeding. Schedule
6y ago
1
3
Solved
Odin9
Spider Farmer SF-4000 dimmable
Hi how high should i hang and how much dim %?? whit spider farmer sf-4000 dimmable for seedlings g ?? Nice if some now for veg and flower too ✌️
Setup. Lighting
5y ago
1
1
Solved
Joeynumbers
Please help me with light situation
I have a mars tsl2000 and another one on the way I am wondering would a 1000 watt hps light to go with the 2 tsl2000 mars would be better than 3 Mars tsl2000 I have about 30 plants going and want to get the most and best possible I have plenty of room
Setup. Lighting
5y ago
2
3
Solved
FlynnRyder
Okey dokey yall I need some guidance on lighting distance. So these clone's buds all look different and I'm not sure if my SF 4000 needs dimmed down. I just got the AC rocking so it's way cooler. what intensity or distance do yall use for these boards? love ya
Setup. Lighting
5y ago
1
2
Solved
PREPPYPUNK
need a maxsisun plug.
maxsisun sent me a new light but it didnt come with the power cable. Anyone know how to get ahold of MAXSISUN , directly without going through amazon or a way to buy one? Thanks!!! its the cable that plugs into the one in pic.
Other. Other
Setup. Lighting
6y ago
1
4
Solved
Scott_Tennerman
What kind of light level (lux) during the dark cycle will cause my plants to herm in the flowering stage?
What kind of light level (lux) during the dark cycle will cause my plants to herm in the flowering stage? I am growing in my bathroom (no windows) and I am worried about external light entering. My bathroom has 3 LED (30W) bulbs in, I have removed the 2 closest to my plants.
Setup. Lighting
6y ago
2
2
Solved
WulfBlud
Maximum / Optimal Lux or FC for LEDs and checking readings
I have a Viaspectra P2500 which is a bit big for my tent but I figured I could dim it and have when I upgrade my tent. I think I am burning my plants though so I am wondering what the maximum and optimal Lux/FC is for LEDs. I have the Light Meter LM-3200 app with diffuser. Ty
Setup. Lighting
4y ago
3
Solved
Dony007
The quality of the new lamps?
I bought new lamps I want to insert 2 lamps of 240w per meter per meter. Attach data of the lamps What do you say how much weight can be taken out here ??
Setup. Lighting
5y ago
2
Solved
KCduzit
When to flip into flower?
currently midway through my 9th week of veg and am wondering when I should send plants into flower, should I double check sex first? (Feminized seeds) or wait until my screen fills out more? Plants are in 3 gallons pots and I worry that they might get rootbound if I veg Longer.
Week 8
Setup. Strains · Photoperiod
Setup. Lighting
Techniques. Other
6y ago
2
2
Solved
Jessejames
Next steps? I'm pondering about ways to setup lightschedule and build the growspace in a room with my pet boa in it I'm still unsure if I'd need better ventilation there
Week 2
Setup. Lighting
7y ago
2
2
Solved
Student_of_Science
Trying to get setup right
I know I prob need to get a nicer light and ditch all the crap lights but for now I have what I have. Perhaps after some success I may be able to get a new light to replace all of them. But how far should it be? 2 feet above rockwool cube? And what watts per plant
Setup. Lighting
4y ago
2
2
Solved
Frezzy
Growlampe
Hello everyone, I've been looking for a good grow light that can handle multiple plants without any issues. I've heard a lot of good things about the Mars Hydro TS600. Is the light better for single plants, or can you also grow multiple?
Setup. Lighting
2y ago
3
3