Do LEDs have a benefit if heat is no issue.

1212ham

Well-Known Member
All this talk about LED's is making me want one. Whats the best 5x5 LED you'd throw in your tent? If money isn't issue.
Two of the 340 watt.

 
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OneHitDone

Well-Known Member
Thanks for all of this very useful info and opinions folks. I just purchased my first proper led light to replace a 600w hps.
I went with a mid range option, the spyderfarmer se5000. Its a 480w bar style led. https://www.spiderfarmer.com.au/products/spider-farmer-se5000-led-grow-light
The only reason I didnt go with the Migro light was because being somewhat broke I needed to pay it off with an afterpay style thing which they dont offer.
Star dog when I said heat was no issue I just mean that I have my temps well under control with the HPS currently and its not a huge factor in my decision to go with led like it is for some people. Im using a closed system with a vivosun vented hood that ducts straight to the outside and the hood stays very cool. THen AC to keep the temps optimal. Where I live external temps rarely go below 15 deg c in winter so heating isnt required.
Do report back with results after a round or two with the led vs hps. :peace:
 

OneHitDone

Well-Known Member
If heat or wattage is no concern, IMO the remaining differences between HID and LED is light spread, spectrum, and maintenance (bulbs). The latest LED's can have improved light spread instead of concentrated in center. Also, LED's dont require bulb changes and many now offer full spectrum.
 

ComputerSaysNo

Well-Known Member
And even then that’s only a benefit if you’re starting off lighting more than a sq meter, the way prices have come down. You can get a 300w led for $200+- but if you’re trying to light a 4x4, a 5x5 or a whole room cheap (and can afford the running costs) you can get 1000w hids with bulbs in air cooled hoods for <$200
It is absolutely true what you say.

I don't understand people anyway who are trying to grow "about a pound" and apparently don't even have enough money for a decent light.

If you have to start that small, you can always get a 100W LED for maybe $80 and finance a bigger setup with your first harvest. At least that's my thinking.

And now you have LEDs with maybe twice the system efficiency compared to HID. That's just so much electrical power saved (and therefore CO2 emission reduced).
 

speedwell68

Well-Known Member
HPS should make a great Grilled Cheese Sandwich in no time.
I once lit a joint with a 600w HPS.:D

I used to grow under 2x600w HPS. Then I stopped growing for a few years. I came back to growing in April 2020 when the Pandemic meant I couldn't get any weed. So I pulled out my old HPS lights and they wouldn't work. So I bought some cheap COB LEDs on Amazon. They worked but the weed was always a bit light and fluffy. I couldn't get the results I used to get under HPS, but I wasn't chasing my arse trying to keep everything cool either.

My mate is a grower and a bit of an electronics guru too. He showed me some lights he had built using bits he bought on AliExpress. Samsung LM301H boards and Meanwell drivers. Basically he had built a clone of a Mars Hydro TS1000, at a fraction of the price. So I had him build me 4 of them.

So I am now running 4x150w in a 4x4 and the results are impressive. Yes I have to run a little 80w greenhouse heater 24/7, but that actually makes little difference to the cost. I will never go back to HPS.

The only niggle I have had is getting the temps and ventilation right. If I use my big RVK fans the temp drops too much. So I have some extra desk fans to keep the air moving and a small tube heater, it works. As it gets warmer I am going to invest in a modern AC Infinity fan and control it with some Zigbee temp/humidity sensors and some smart switches.

These are mine at week 5 of 12/12...

IMG_20220121_174736.jpg

I am not one for taking pics of my grow, the first time I have ever posted a pic online, I took it a couple of weeks ago . It doesn't give you much sense of scale, but the colas are now tight as can be and the frost/resin production is awesome. Not the most impressive grow ever, but I am very pleased with results. Especially as I have never grown under these lights before and I have changed the pots/medium I am using.
 
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hillbill

Well-Known Member
Welcome to the jungle! Boards and Bars are so efficient, especially with the components you have, lookin good!
 

Blue brother

Well-Known Member
I once lit a joint with a 600w HPS.:D

I used to grow under 2x600w HPS. Then I stopped growing for a few years. I came back to growing in April 2020 when the Pandemic meant I couldn't get any weed. So I pulled out my old HPS lights and they wouldn't work. So I bought some cheap COB LEDs on Amazon. They worked but the weed was always a bit light and fluffy. I couldn't get the results I used to get under HPS, but I wasn't chasing my arse trying to keep everything cool either.

My mate is a grower and a bit of an electronics guru too. He showed me some lights he had built using bits he bought on AliExpress. Samsung LM301H boards and Meanwell drivers. Basically he had built a clone of a Mars Hydro TS1000, at a fraction of the price. So I had him build me 4 of them.

So I am now running 4x150w in a 4x4 and the results are impressive. Yes I have to run a little 80w greenhouse heater 24/7, but that actually makes little difference to the cost. I will never go back to HPS.

The only niggle I have had is getting the temps and ventilation right. If I use my big RVK fans the temp drops too much. So I have some extra desk fans to keep the air moving and a small tube heater, it works. As it gets warmer I am going to invest in a modern AC Infinity fan and control it with some Zigbee temp/humidity sensors and some smart switches.

These are mine at week 5 of 12/12...

View attachment 5078662

I am not one for taking pics of my grow, the first time I have ever posted a pic online, I took it a couple of weeks ago . It doesn't give you much sense of scale, but the colas are now tight as can be and the frost/resin production is awesome. Not the most impressive grow ever, but I am very pleased with results. Especially as I have never grown under these lights before and I have changed the pots/medium I am using.
Nice job mate this is what it’s all about. Well done!
 

calvin.m16

Well-Known Member
The lighting that has been used for decades, T5, HPS, CMH is better than LED other than when it comes to power consumption and heat. I have never gone WOW THESE LED GROW THESE SO MUCH BETTER THAN HPS OR T5!

LED are still overpriced hype unless you're technically inclined enough to source affordable parts and pieces and build DIY fixtures.

I grow with Growers Choice ROI 720s in my VEG room and 1000w DE HPS in my flower room. I've ran LED in flower and it's not as good in my opinion or 3 of my patients opinions.

LED buds are on the left, HPS buds on the right. Left buds were grown using LED the lighter colored buds were grown under HPS. The buds are smaller due to being from the bottom of a turkey bag (shake if you will).
1643840801650.jpeg
 

OneHitDone

Well-Known Member
The lighting that has been used for decades, T5, HPS, CMH is better than LED other than when it comes to power consumption and heat. I have never gone WOW THESE LED GROW THESE SO MUCH BETTER THAN HPS OR T5!

LED are still overpriced hype unless you're technically inclined enough to source affordable parts and pieces and build DIY fixtures.

I grow with Growers Choice ROI 720s in my VEG room and 1000w DE HPS in my flower room. I've ran LED in flower and it's not as good in my opinion or 3 of my patients opinions.

LED buds are on the left, HPS buds on the right. Left buds were grown using LED the lighter colored buds were grown under HPS. The buds are smaller due to being from the bottom of a turkey bag (shake if you will).
View attachment 5078961
I ran led in bloom for about a year. Patients definitely noted smaller flower size and where like "wow" when I put HPS back in.
I don't think it is exclusively the source of the lighting as it is the fact that led companies are going the wrong way with spectrum for the sole purpose of µmole/joule dick swinging bragging rights. :-(
 

PSUAGRO.

Well-Known Member
The lighting that has been used for decades, T5, HPS, CMH is better than LED other than when it comes to power consumption and heat. I have never gone WOW THESE LED GROW THESE SO MUCH BETTER THAN HPS OR T5!

LED are still overpriced hype unless you're technically inclined enough to source affordable parts and pieces and build DIY fixtures.

I grow with Growers Choice ROI 720s in my VEG room and 1000w DE HPS in my flower room. I've ran LED in flower and it's not as good in my opinion or 3 of my patients opinions.

LED buds are on the left, HPS buds on the right. Left buds were grown using LED the lighter colored buds were grown under HPS. The buds are smaller due to being from the bottom of a turkey bag (shake if you will).
View attachment 5078961
Hmmm, t5 still better than led? That's a red flag for me. It's ok LEDs aren't for everyone just like solar, ev, heat pumps, etc. Modern society will just will leave you behind.

I ran led in bloom for about a year. Patients definitely noted smaller flower size and where like "wow" when I put HPS back in.
I don't think it is exclusively the source of the lighting as it is the fact that led companies are going the wrong way with spectrum for the sole purpose of µmole/joule dick swinging bragging rights. :-(
I guess your "patients" are ok with you using systemic fungicides though?..... Commercial ops are embracing the tech, step aside and watch. Adaptation is high in the appropriate climates.

I remember couple years ago when it was no way led bulbs replacing incandescent, can't dim, terrible spectra, expensive.... Now I can't find any traditional bulbs in the aisles. Adapt or die. you're choosing the latter?
 

OneHitDone

Well-Known Member
Hmmm, t5 still better than led? That's a red flag for me. It's ok LEDs aren't for everyone just like solar, ev, heat pumps, etc. Modern society will just will leave you behind.



I guess your "patients" are ok with you using systemic fungicides though?..... Commercial ops are embracing the tech, step aside and watch. Adaptation is high in the appropriate climates.

I remember couple years ago when it was no way led bulbs replacing incandescent, can't dim, terrible spectra, expensive.... Now I can't find any traditional bulbs in the aisles. Adapt or die. you're choosing the latter?
Not quite to that point yet homie :lol:
Plus did you not pay attention to the part where I said my veg T5's ARE LED?? :confused:

Edit: in your defense the T5 led talk may be in another thread :peace:
 

Prawn Connery

Well-Known Member
Two of the 340 watt.

For a 5x5 you want the 480W drivers in there. We normally pair a 320W driver with each Longboard in a 4x4.

I need to push @Grow Lights Australia (are you reading this?) to update his website to reflect all the new products coming out.

Grow Lights Australia has the best spectrum you can buy on one channel. Of course I'm biased, but it's true. :bigjoint:

Check them out the plants they grow: https://www.instagram.com/growlightsaustralia/
 
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