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Grow Questions
MH, HPS distance?
MH, HPS distance?
Untiedmymind
started grow question 3 years ago
So i am reading diaries that are using MH & HPS lights and Seeing a Distance of 10-18 inches from plant. Are people really putting them that close during flowering stage?
Open
Setup. Lighting
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Answer
youngatheart
answered grow question 3 years ago
Apparently so. I consider it f.... cruel.
1 like
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Similar Grow Questions
Solved
GWSD82
What height and power for seedlings? Kingbrite 480w in 3x3
Kingbrite 480w in 3x3 tent - What height and power for 1 week old seedlings? Currently 30 inches from plant at about 50% power. Too much, or not enough? Anyone have experience with these lights?
Week 1
Setup. Lighting
3 years ago
1
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Cod_Fish_Joe
Currently my lights are on a 18/6 schedule, from 6am, until 12am. I want to change their light cycle to start at 4pm and turn off at 10am, so the heat of the light balances the chill of the night. Whats the best way to do this, without triggering flowering, or stressing them.
Week 1
Setup. Lighting
3 years ago
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PREPPYPUNK
JUST PLANTED GERMINATED SEEDS. DISTANCE, LIGHT SCHEDULE AND LIGHT POWER? PLEASE HELP! THANK YOU!
I JUST PLANTED GERMINATED SEEDS TAP ROOT DOWN AND LIGHTLY COVERED, WILL KEEP DAMP. WHAT IM WORRIED ABOUT IS LIGHT SCHEDULE AND LIGHT STRENGTH AND DISTANCE. ITS A MARS HYDRO TSW 2000. I HAVE IT AT 40% POWER AND 24 INCHES FROM SOIL. 12/12 SCHEDULE. DOES THAT SOUND COOL?
Setup. Lighting
Germination. Other
3 years ago
4
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mannicropper
LED Lights
Anyone used the Phlizon Cree COB 2000w lights? I’m running two in a 8’x4’ under a scrog net. 5 weeks into veg but nowhere near where they should be. Used only the COBs in veg as some suggested but had to put on full blast today and hope for some speedy growth before I flower them
Plant. Too short
Setup. Lighting
Techniques. ScrOG
3 years ago
1
2
Solved
Janus_Garus
Led on 18/6 grow/flower photoperiod
I have the idea to put a led in my second tent for pre growing photoperiod girls, I have some room left over for some autoflowers who also grow & flower on 18/6 light - leds can switch between grow/flower. If I switch the led to flower will that be OK for my photoperiod girls?
Setup. Lighting
3 years ago
2
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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
3 years ago
1
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Solved
MangJs
Substrate Germination - lighting
Hi Growmies!, just a quick question on lighting on germination just want to know your methods. do you 18/6 lighting or 24 hours on germination period? is it worth doing 24 hours? whats your preffered method Thanks all
Setup. Lighting
Germination. Substrate
3 years ago
4
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2smokeyy
Temporary 24 hours darkness, equipment issue.
My light ballest has broken tonight, my lights will have been off for 24hours by the time I can replace, the plants are about 2 weeks from harvest, would it damage the plants to start the light cycle (18 on 6 off) tomorrow after having the light off for 24 hours?
Plant. Other
Setup. Lighting
3 years ago
3
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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
3 years ago
1
4
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PREPPYPUNK
LOWERED LIGHTS TO 9 INCHES FROM TOP FROM MFGRS SUGGESTED 18 INCHES FOR LAST FEW WEEKS OF FLOWER, FANS BLOWING ON TOPS AND TEMP IS FINE FOR PAST WEEK. CAN THIS HELP BUD GROWTH? THANK YOU!!!
Week 9
Setup. Lighting
3 years ago
3
2
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Michael1234
height of the TSW 2000 led lamp from the gables
Hello, my plants have started producing flowers, I would like to ask for advice on the height of my TSW2000 led lamp from the tops
Week 7
Setup. Lighting
3 years ago
1
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BlumenBot
Optimal Veg Light Spectrum?
If you had to pick one light color for veg only, never to be used for flower, what would it be? 4000k, 5000k, 6000k, 6500k?
Setup. Lighting
3 years ago
3
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MangJs
HLG650R grow light, - germinating seeds
Hi Guys, has anyone use HLG650R on seed germination? bit hesitant to use this light on germination as we know how strong this light is. planning to do below - 48 inch above - dialled down to 5% - propagation dome will be used Thank you all - Happy Growing
Setup. Lighting
Germination. Other
3 years ago
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indoorontario
Lux for measuring led light?
Anyone familiar with using the lux light measurements with full spectrum leds? I've got the free app on my phone and read some online guides but any advice or shared experiences would be helpful.
Week 1
Setup. Lighting
3 years ago
3
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HiddenMessage
Do watts from light matter just as much in veg as flower?
Week 1
Setup. Lighting
3 years ago
2
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Bingo86
Light height and brightness
Can anyone please suggest a good height/distance I should have my light at this stage please and what percentage I should have the light dimmer on? Thank you
Week 1
Setup. Lighting
3 years ago
3
3
Solved
arkhive
LED's wont shut completely off
Lights seem to go on a "standby mode" instead of being all the way shut when timers switch them off. Should I buy some other timers? These were brand new, cheap ones though and both the same. Lights are HLG 600 RSPEC and both did this.
Week 4
Setup. Lighting
3 years ago
1
2
Solved
GrowwUp
When turn on the lights?
It's pretty warm here right now already. When is the right moment to turn the light on? It's a dual spectrum 300w CFL under a 470x470 reflector and both seedlings are auto fem. What's the best light schedule? 24/0? 18/6? Thanks
Setup. Lighting
3 years ago
2
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AUTOASSASSIN215
New 4x4x8 Tent Need a better light 400 budget any suggestions??
I have a new 4x4x8 grow tent growing about 4 to 5 plants so now i have to upgrade the light i’m on a budget about 400 dollars Any suggestions or strategy
Setup. Lighting
3 years ago
12
14
Solved
hirund
Should I switch to flowering now?
The height of my growbox is 120cm (4 feet) and I'm afraid that sativa can grow taller than that.
Week 2
Setup. Lighting
3 years ago
3
3