The Grow Awards 2026 🏆 
MH, HPS distance?
Untiedmymindstarted grow question 4y 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
likes
Answer
Similar Grow Questions
Solved
Chacazulu1
Extra belichtingHallo . Ik zit in de derde week bloei van mijn royal gorilla planten ze staan onder een hps lamp van 600 watt als ik nu nog een extra lamp van 400 watt zou plaatsen zou dat de opbrengst vergroten of een verspilling van energie . Groeten GorillaSetup. Lighting
6y ago
5
3
Solved
Vee_vee
Equipment necessary?Can I grow an auto strain without a tent/lights etc.? Just in pot in my living room?Setup. Lighting
5y ago
4
Solved
jimmminycricket
LightsUguguhrjrj is this enough light for these babez? 600 watt tamlampySetup. Strain - Autoflowering
Setup. Lighting
6y ago
2
3
Solved
Mikewithgreenthumbs420
Buying a grow tent looking for better quality spider farm 2000 or Hydro mars 2000 set ups from AmazonSo im debating on which set up. I want a good set up came up with these two Spider farm 2000 24x47x71 or Hydro mars 2000 48x48x80 grow tents from amazon which one would get more plants looking for quality using burple led rite now any suggestions please help me ThanksOther. Other
Setup. Lighting
5y ago
4
Solved
LostInTransit23
Should I put the light on before sprouting or not?I'm most likely going to be transferring my autos from paper towel into my medium, I've heard some people say have the light on before they sprout and some who say after it's sprout, which is the best thing to do?Plant. Other
Setup. Lighting
Setup. Seedling
6y ago
2
2
Solved
Dmelo
Viparspectra p1500 flower?Anyone use a viparspectra p1500 during flowering? Got this as a cheap intro led and I feel like the plants stay in cottonball phase of flower...brought one outside and now its loaded with buds. Idk if this one has slow genetics or if the light isnt delivering correct spectrumBuds. Other
Setup. Lighting
4y ago
3
3
Solved
Tubington9
Should I dim my TS1000? Ts1000When 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 momentSetup. Lighting
4y ago
5
6
Solved
ZhugeTsuki
Can too much light in Veg cause EC to skyrocket?Hello everyone, I have 4 plants in a 3x3 area under three of these lights - https://amzn.to/2MhseVH
360w all together which is what I expected to use during flower, I didnt realise that you dont need to use as much during veg, all plants have had to be flushed with EC's at 106y ago
1
2
Solved
DWCbuds
Lights airstone c02What light to plant distance would you set it at? The only test I've done is at 25 inches its stable at 80°f and 75% humidity. When I lower it to 18 inches, the tent read 85°f and 73 humidity.
Other question I have is what's your favorite air stone(disk)?
Lastly, add c02 yes/no5y ago
2
2
Solved
GrowwUp
300W dual spectrum CLF to LED equivalentI have a Dual Spectrum (Red + Blue) CFL 300W (2700K+ 6500K) light in a growing tent of 80x120x200. I grow only two plants (mostly autos) in soil and my goal is grow at least 2 ounces of dry bud per plant. What LED wattage light should I get to replace or improve to my setup?Setup. Lighting
4y ago
2
2
Solved
MVgenetics
T5 veg? For seedlingsIf anyone has any idea how long I can veg my seedlings inside of a closet with 2 t5 fluorescents.. let me know! I’m close to harvest with my first round, but they still have another 2-3 weeks at least and i can’t put my new girls in the 12/12 tent on their schedule. TIA!!!5y ago
3
2
