• Here is a link to the full explanation: https://rollitup.org/t/welcome-back-did-you-try-turning-it-off-and-on-again.1104810/

Which light ?

markrossiter11111

markrossiter11111

Member
I currently use a 250w Hps in a small tent - 60x60x120cm

I want to switch out to an LED unit but I can't decide which is best ,

2024 New Spider Farmer SE3000 300W Led Grow Light Dimmable Samsung LM301H EVO

Spider Farmer SE3000 EVO 300W Led grow light, replace 450W HPS; High efficacy up to 2.85umol/J; Samsung LM301H EVO diodes; Cover a 70x70cm to 90x90cm planting area.
spiderfarmer.co.uk spiderfarmer.co.uk

Or

www.hydro-harvest.co.uk

Omega Infinity 300w 2.7 Pro LED - Hydro Harvest

High-performance, all-stage LED fixture at an incredible price - 2.7 µmol/w and 815 µmol/s PPF
www.hydro-harvest.co.uk www.hydro-harvest.co.uk

Any help welcomed
Thanks
 
1

1212ham

Well-Known Member
Those are better suited to a 90 x 90, probably won't fit in a 60 x 60.
Here's a good one, Viparspectra XS1500 Pro

The latest and greatest for 2025??

I use Cree COBs 3070 and by now that is already old school. They still work great, no doubts and worries there. I am just looking for the latest and greatest. Back in the day I have read, re-read and re-re-read @SupraSPL thread over and over again. I am well familiar with the basics and then...
www.rollitup.org
 
markrossiter11111

markrossiter11111

Member
1212ham said:
Those are better suited to a 90 x 90, probably won't fit in a 60 x 60.
Here's a good one, Viparspectra XS1500 Pro

The latest and greatest for 2025??

I use Cree COBs 3070 and by now that is already old school. They still work great, no doubts and worries there. I am just looking for the latest and greatest. Back in the day I have read, re-read and re-re-read @SupraSPL thread over and over again. I am well familiar with the basics and then...
www.rollitup.org
Click to expand...
They are both on 60cm square , they are designed for my size tent ,
Thank you I'll take a look ...
 
go go kid

go go kid

Well-Known Member
should be fine, its dimmable in 25% incraments, so you can turn it down to suit your grow space, plus, running it on lower power will increase its life span. bonus
 
futurebanjo

futurebanjo

Well-Known Member
markrossiter11111 said:
Is it though ?

Currently running 250w hps

120 cm tall x 3/4 plants
Click to expand...
A 300w LED, for arguments sake, has a light output roughly equivelent to about 500w HPS, depending on the quality of the LEDs etc.
Thats why LED is popular, it's a lot more efficient on power consumption.

SO first make sure it fits, and second, make sure to get one with a dimmer dial so you can sial it down a bit when plants a small etc.
 
coreywebster

coreywebster

Well-Known Member
markrossiter11111 said:
They are both on 60cm square , they are designed for my size tent ,
Thank you I'll take a look ...
Click to expand...
At 300w They are designed for a 3x3ft tent, though that's the first time I've seen a manufacturer (spiderfarmer) say otherwise.

"The Infinity 300W 2.7 Pro from Omega is a is a stunningly effective LED grow light that’s ideally suited to the vast majority of indoor gardens. Designed for areas of around 100cm x 100cm"
 
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cat shit

cat shit

Well-Known Member
markrossiter11111 said:
I currently use a 250w Hps in a small tent - 60x60x120cm

I want to switch out to an LED unit but I can't decide which is best ,

2024 New Spider Farmer SE3000 300W Led Grow Light Dimmable Samsung LM301H EVO

Spider Farmer SE3000 EVO 300W Led grow light, replace 450W HPS; High efficacy up to 2.85umol/J; Samsung LM301H EVO diodes; Cover a 70x70cm to 90x90cm planting area.
spiderfarmer.co.uk spiderfarmer.co.uk

Get an xs2000 i use mine in a 2x2 and use it in other tents when needed its 220watts and lights up a 2x2 very wellthe xs1500pro is also a great light. Ive flowered 1 large photoperiod with one or a couple of autos. Its currently above a little strawberry cheese photoperiod and as always gets good results

www.hydro-harvest.co.uk

Omega Infinity 300w 2.7 Pro LED - Hydro Harvest

High-performance, all-stage LED fixture at an incredible price - 2.7 µmol/w and 815 µmol/s PPF
www.hydro-harvest.co.uk www.hydro-harvest.co.uk

Any help welcomed
Thanks
Click to expand...
 

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jimihendrix1

jimihendrix1

Well-Known Member
A couple things I go by, when choosing a light. It makes it simple.

This, is also assuming one is attempting to Maximize the potential space of the enclosure, with the optimal recommended amount of light.

Also, 1 thing to think about, when running high/optimal amounts of light, is to have the most fresh air exchange possible. And this cannot be stressed enough. Growing in a small enclosure, or any enclosure, and not be able to have access to frest air, constantly, will greatly hamper progress, and in many cases, cause stress and/or deficiencies/imbalances. I myself grow in a big, open attic, with huge ventilation. It may as well be outside, but, as of now, im only using about a 7 x 7 area, but only 4 x 4 for growing and a 1000w /MassMedicalStrains-6000k Halide, but also have used other lights, and have knowledge. Attic is probably 1500 sq/ft. and as high as 12ft ceilings. Also insulated.

But, when Gavita came out with the 1700e, it was advertised as being a direct replacement for a 1000w HID, in a 4 x 4 area.
This light was 645w. So, consider while LED are a bit more efficient, now, vs then, it aint much, and doesnt alter the basic formula.

So, basically 645w, for 16 sq/ft, is about 40.3w sq/ft, for maximum results.

So, your area is 4 sq/ft. 4 sq ft x 40.3= 161.2w.

Next thing to consider, is Spectrum. I myself, like a spectrum, as close to the sun, as possible, which is between 5000k-6500k, but few, if any LED cover that spectrum, and many would only use that spectrum, for veg, but, the Gavita, is around 5000k spectrum. Most/Many like 3000k which works fine, as does 2100k HPS/Hortilux in particular. Many things work, I just like 5000k-6000k. Which is what the sun is.

So, Id look into some kind of 160w-200w LED,. Or run a more powerful one, dialed down.

This one easily fits into a 60cm x 60cm area.
Id look into the HLG 200 Rspec®
 
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