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Back to Grow Questions
Powerful HPS distance
Sooperdooper
started grow question 6y ago
How far can my 600w HPS light be and still result in good growth?
Solved
Week 11
Setup. Lighting
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Athos
answered grow question 6y ago
Without an air cooled hood the light to canopy distance should be between 12 to 18 inches (30 to 45 cm)
1 like
Complain
Selected By The Grower
CloneKingz
answered grow question 6y ago
Heya! a 600W I would say should be no further than 20" away during flower. That would be around 700par according to most 600W HPS manufacturers. Lowest I would go is 12" with gooood ventilation. Cheers,
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Similar Grow Questions
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
5y ago
4
2
Solved
Mj42Organic
Additional lighting in flower???
I’m planning on putting another 2 x 600wLED (blurpul colour type) alongside my current 2 x1000w led Cree cob lights. I have them spare and was hoping this will help with flower/thc production??? Is it worth putting them in or just wasting electricity. Any help appreciated 🤙✌️🎄
Week 21
Setup. Lighting
5y ago
1
1
Solved
Tubington9
Should I dim my TS1000? Ts1000
When using two lights in a small space should I be worried about to much light? The plant is mature and is about to transition to flower, I’m just curious what is too much if any. The TS 1000 is dimmable the sf1000d is not. Lights are 18” at the moment
Setup. Lighting
5y ago
5
6
Solved
Steek88
Advise
Yes I have jholes at the bk for ventilation also it’s an led light not much heat at all come from it. Thanks alls for ur advice il keep an eye on it nxt few days thank use👌
Week 2
Setup. Lighting
4y ago
1
2
Solved
Sk1nR
Mars hydro 600 lights not going fully out
Hi everyone I'm having issues with my LED mars hydro 600w when the timer is going to 'off' the lights are still very dim, with the plant being a photo period I'm worried the dimmed lights won't let the plant sleep and shock it or keep it in veg. Has anyone had this issue?
Setup. Lighting
5y ago
6
6
Solved
NonameGrowDude
Led light for a small seedling / early veg space 80x40x80cm
The plants to use the space to start seeds and veg them little bit until I transplant to final pot in a flower tent. I don't have much height so is looking for a light that the plants can be close to. Any suggestion for led or should I just go with t5?
Setup. Lighting
3y ago
2
Solved
Skinnytalls420
Hps to LEDs
Since I’m trying to answer so Many question to best of my ability!!!!! I thought I would ask one myself I’ve got 2 600watt hps lights and my autos are about to bud I’ve recently got 2 tsw2000 mars hydro do you think I’m okay changing them other to the leds? What will be the outco
Setup. Lighting
5y ago
6
5
Solved
sativa_lover
Lower lighting at switch to 12/12?
Do you typically want to lower your lighting when you switch to 12/12? I'm a little confused about what is meant when they say to have a 12" light distance for flowering and 18" for veg. Does that mean lower to 12" at the switch to 12/12, or just maintain a min 12" distance?
Week 8
Setup. Strains - Photoperiod
Setup. Lighting
6y ago
1
2
Solved
Dubbie
Using veg light for flowering
What will happen if I grow in bloom with a growers choice led ROI e 200w veg light ? Will I still get a nice yield/ grow for kinda beginner
Setup. Lighting
5y ago
2
Solved
Hansgrube
Can I use regular sunglasses inside my tent?
Can I use regular sunglasses inside the grow tent to keep my eyes?
Other. General questions
Setup. Lighting
Setup. Other
6y ago
5
Solved
Salokin
Light burn?
I had lowered my Sanlight Q4 from 50 cm to 40cm, as per vendors recommendation and now I believe that I have burned the little ones. Or is this a nutrient issue?
Week 1
Leaves. Color - Dark-brown
Setup. Lighting
5y ago
3
3
Solved
zkittlezjunior
Cob Led Heat Problem
Guys i have a problems about cob led.Im gonna use 3*50W Cob Led full spectrum in a pc case.Do you think is there any heat problem in it?My case is about 50cm and my pot is 8cm.I'll use 2*120mm fans for exhaust and fresh air.And inside i'll insert one 8cm fan.
Other. Other
Setup. Lighting
Setup. Other
6y ago
7
Solved
Ninjabuds
26 hour day cycle?
ever done a weird light cycle for photo plants? like 14 hours of light then 12 hours of darkness then keep repeating I know that this is longer than a normal 24hour day. 1. 12 hours of darkness is what makes weed start flower. Do weeds know days r 24hr? Can a 26hr day cycle work
Setup. Lighting
1y ago
4
Solved
esotaro
What is the highest DLI (Daily Light Interval) that newly sprouted Cannabis plants can take for the first month after sprouting?
Also, is there any benefit to having more than 18 hours of light a day? Thanks
Week 1
Setup. Strains - Photoperiod
Setup. Lighting
Setup. Seedling
4y ago
7
6
Solved
theoracle
hello people what do you think about this?
i plan to grow one autoflower,i have two usb fan, mars hydro 600 ts
Setup. Lighting
Setup. Other
Techniques. LST
6y ago
4
Solved
Cremo
When should I switch on the other half of my LED light setup?
Hi guys, I grow 6 plants in hydroponics in a 4x4 grow box and they are 2-3 weeks old (about 7-8 cm tall). I use MarsHydro TS 3000 LED (450W) which have 2 seperate LED panels. Right now I run only one panel and would like to know when I should turn on the other panel. THX
Setup. Lighting
6y ago
1
2
Solved
LAzerBEAN
matching cobs to drivers? CLUO4j-1818c9
what driver would i need to run four citizen cluo4j-1818c9?
Setup. Lighting
6y ago
2
2
Solved
jamjam887766
Tent too hot?
I added two blurple lights - I'm not sure how much they're helping growth but they are definitely making the tent hotter - about 5 degrees F. I have a fan blowing at the bottom of the tent and at top over the lights but I'm worried that it might be too hot. Should I ditch them?
Week 3
Setup. Lighting
6y ago
4
Solved
roro_204
Yellow/ Lime Leaves ????
I have 3 grow rooms. I moved all the deficiency plants to 1 room. The whole half of the plant is turning really light yellow/ Are my lights too close to the plants ? Or is my feed to low?
Leaves. Color - Yellow
Setup. Lighting
Feeding. Deficiences
5y ago
4
3
Solved
Ema26
Hey guys I’m wanting to get a mars hydro ts-1000 in UK. Where is the best place to get one online? Or straight from their website personally? Thanks!
Setup. Lighting
6y ago
1