Hey, I’m going to be getting a 40x40x140 (as this is all my space can hold) grow tent. My plan is to have one DWC or soil, Scrog plant inside I was wondering what light would be good for this, I have done several hours of research and am frankly overwhelmed and finding conflicting information. So which out of hps/led/etc.. and what ppfd/watts would you recommend I would like to go for most bang for buck “type” of lamp if possible, thank you for taking the time to read looking forward to reply’s
Light for small setup
- Thread starter Amith416
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PadawanWarrior
Well-Known Member
What's your budget? MH and HPS lights are the least expensive way to go, but you can spend a lot on LED if that's in the budget.
I have a much higher budget then needed for such a small space but am quite frugal so am looking for the cheapest option that I will be able to get a big yield without burning them and can use throughout all phases of growth so (i would say) LED is out of the question, I am unaware if more money = more yield in a 1:1 ratio if it does then an led might still be beneficial, electrical efficiency isn’t much of a concern either
Bushbaby11
Well-Known Member
MH or HPS MIGHT cause heat issue for you in such a small tent, you'd need a decent outtake to deal with the heat, I've never used them but I'd say go down the LED route
PadawanWarrior
Well-Known Member
If it was me I'd probably get an LED light and dim it down. That is a pretty small space.
This might be alright too, but I think the LED will outperform it.
Could I trouble you for some examples of these? And excuse my naivety the more I learn the more questions I have also I retract the statement about LEDs seems I was misinformed
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GBAUTO
Well-Known Member
PPF is 'how much' light a fixture can generate. That is measured in micro-moles(umole).
PPFD is a measure of 'how much' light distributed over an area.
You are trying to light a 0.40x.0.40 area(.16 sq m).
750 umole/sq m will flower well, so you will need (.16 x 750)= 120 umole PPF
Most current tech leds are over 2.0 umole/watt, so a fixture that uses at least 60 watts should be perfect.
Check out the led section in indoor growing for a ton of info.
ComfortCreator
Well-Known Member
I would buy an HLG100 ($149), or a HLG65 ($99) if on a smaller budget.
Low heat plenty of lumens and comes with everything you need. Efficiency at the high end of whats available which means very low energy costs relative to output. Plenty of umols for your space.
Low heat plenty of lumens and comes with everything you need. Efficiency at the high end of whats available which means very low energy costs relative to output. Plenty of umols for your space.
PadawanWarrior
Well-Known Member
I'd get a HLG 135 Rspec and dim it down a bit. I have both lights and they're both great, you just can't dim the 100's.
ComfortCreator
Well-Known Member
Dimming is key, I agree. Thats a big plus.
But heat with the more powerful boards could be an issue and also could burn the tops once space gets limited vertically. The gentler boards can be a few inches away and in that space probably will be.
ComfortCreator
Well-Known Member
Suggesting a switch to "PadawanStoner"
Fits the avatar
Budget Buds
Well-Known Member
Find a deccent led light, hps or mh will be too much heat for that small of a space. One of these would rock that space... https://www.rapidled.com/single-75w-plug-and-play-led-grow-light/ or https://www.rapidled.com/single-100w-logic-plug-and-play-led-grow-light/ any of those with a dimmable driver would work great for you're space ....
PadawanWarrior
Well-Known Member
I don't think they could handle a 100 a few inches away. They're still pretty powerful. I was talking about turning down the 135 to like 50 watts. I just like the versatility that the dimmer adds.
RangiSTaxi
Well-Known Member
are we talking a 40cmx40cm x140cm high?
if so that is micro tiny, a CFL 150W Flower Bulb 2700K, set horizontal, with a cheap 100 mm fan pumping in cool air to the bottom, and one ducting the hot air out the top should work, for a single plant that you dont top and put into flower after 2 -3 weeks of veg.
In potting Mix, definitely not in DWC
www.easygrow.co.nz
Those are in New Zealand dollars, so ignore the price, they will be sooo much cheaper in USD half those prices i imagine.
That is $230 NZD , for 2 fans , 150 watt light and shade, which is $140 USD and we get ripped off here in this country so im sure you can do it even cheaper.
you will be able to run this just inches above the top of the plant without any fear of burning the plant.
$90 USD for 150 watt CFL light with in built ballast and shade
$48 USD for 2 x 100mm ducting fans
if so that is micro tiny, a CFL 150W Flower Bulb 2700K, set horizontal, with a cheap 100 mm fan pumping in cool air to the bottom, and one ducting the hot air out the top should work, for a single plant that you dont top and put into flower after 2 -3 weeks of veg.
In potting Mix, definitely not in DWC
100mm Inline Fan White Plastic | Fans, Silencers | All Fans | Intake Fans | 100mm Fans | Easy Grow Ltd
85 m3/hr airflow
Those are in New Zealand dollars, so ignore the price, they will be sooo much cheaper in USD half those prices i imagine.
That is $230 NZD , for 2 fans , 150 watt light and shade, which is $140 USD and we get ripped off here in this country so im sure you can do it even cheaper.
you will be able to run this just inches above the top of the plant without any fear of burning the plant.
$90 USD for 150 watt CFL light with in built ballast and shade
$48 USD for 2 x 100mm ducting fans
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Budget Buds
Well-Known Member
I noticed this grow light has colour temperature selection I know blues are better for veg and red for flowering but what would be a good option for all round growth/ not changing lights?
also The link @Budget Buds
also The link @Budget Buds
RangiSTaxi
Well-Known Member
3000k or 2700 k, 3500k would also be fine. 2700k looks more yellowish light warmer, like hps, 3500k more whiteish cooler, like fluorescent tubes, like the difference between warm and cool light colors in household bulbs.I noticed this grow light has colour temperature selection I know blues are better for veg and red for flowering but what would be a good option for all round growth/ not changing lights?
also The link @Budget Buds
Higher the number more blue (veg) (whiter light), lower the number more red(flower) (yellower light) as a generalization . all those spectrum's are classed as white light.
3000k or 2700k will see you through flowering and will be fine for veg.
3000k is probably the best middle ground if you want to flower dense bud as well as veg.
More Red more Stretch between inter nodes, taller plant, more Blue closer internodes i.e more compact bushy plant, more red more photosynthesis more yield. more blue slightly higher terpines/smell at a cost to yield/ weight.
Id choose 3000k 90 CRI a HPS bulb is around 2200k
My HLG 550s are 3000k My Cree 3590 cobs are 3500K both work great. Ive also grown great plants with HPS bulbs at 2200k, so 2700k would work great too.
You cant go wrong with anything between 3500k - 2200k
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