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LED Diodes LM281B VS LM301B

Do we say versus or should we just see the difference coming from a hobby grower and small business owner.
I am in no way a Light fundi or scientifically educated, Im more of a hobby grower and will speak on the experience of using the two different diodes in brief. Below are some snippets from the web too, trying to find a good explanation for this common question.

Luminous Efficacy: LM281B 165 lm/per watt Lumens per watt
Luminous Efficacy: Lm301b 220lm/per watt Lumens per watt

 A lumen is a measure of how much visible light is emitted by a source. Lumens per watt (lm/W) refers to the energy efficiency of lighting: how much visible light you get for a given amount of electricity. For example, a traditional 60 watt incandescent bulb in the US produces 860 lumens.

Main difference as far as we’re concerned is lumens/watt, as shown in the screenshots below. The spectrums are pretty similar, and some manufactures are using more 281’s than they would 301’s so that they can be driven at lower current for better efficiency, in at attempt to match the overall efficiency of a 301 fixture, and based on some testing, it seems to be working. The 281’s are also a higher powered diode, which additionally helps with efficiency at lower wattage. Also 281’s are slightly rectangle, while 301’s are square. – PJ Diaz @ ROLLITUP FORUM best answer we have found to date. we will keep looking.

image from our QBS4000 LM281B+

LM281B+
Designed for better lm/$
• 0.5W class mid power LED
• Suitable for ambient lights, downlights & lamps
• Standard footprint: 2.8mm x 3.5mm

image from our QBS4000 LM301B

LM301B
High performance, highest lm/W
for fluorescent lamp replacement
• 0.2W, 3V mid-power LED
• Standard footprint: 3.0mm x 3.0mm

What we have found that if your environment is setup correctly there will not be a huge difference in yield, It will take a few grows before you dial your environment in and you will get the feel for what the lights can do. We have experienced growing different trains at the same time is always a gamble with dry weight, But a dedicated grow to one strain your yield will be more consistent. You will not get a big yield no matter what you do until your environment is dialled in. I think I’ve said that enough times.

Harmony makes small things grow, lack of it makes great things decay

Sallust

Just a thought the way the industry is going selling their lights cheaper and cheaper, to be perfectly frank, I have no idea how they make a living, guess they have cash to spend and are looking for quick returns. Luckily Im/We are in it for the long run, we will wait for all the kak to get filtered out, We will wait when lights fail and there are no warranties to take advantage of and we will wait for the clients who know what they want and don’t mind spending the money on the investment first time instead of buying more than one unit from multiple suppliers because you are not happy with your previous purchase made.

in the Kit included with all purchases this is for the QBS4000 two rope ratches and two hanging clips/cables
Waterproofed connection points with a nano film over our boards for extra ip65 protection
We chose to brand our boards so we can be sure our name sticks. just like some of the buds you will be growing

We aim to provide the one-stop plug and play solution where you buy once and end up saving more than buying twice or even worse three to four times. We have thouroughly scanned the market for the best lights at the best price with warranties to match. We do offer a 30-day money back guarantee privided the requirements are met.


The LM281B Diodes are more than capable of providing enough micromoles to your plants and are perfect for small to medium micro grows or you can add as many as you like and scale up as big as you like for a budget that might be better suited. We promote the LM281B to the hobbyist/budget grower who is scared to go all in but wants results for the money they spent.

Thats the beauty of the LM281B you will not even remeber that those are the diodes you are using cause the results speak for themselves (remembering the environment setup). We have gotten over 30g a plant in a small cuboard using the QB1000 LM281 growing 4 plants. thats just over 1g a watt while using LM301B we are getting and average 40/55g a plant using the QBS1000 LM301B which work out to just under 1.8/9g a watt. Again we could get more with more lights but this is the average grow with strains that are known for growing indooors and have been sought after, in other words Good Genetics is key obviously but growing strain specific grows your yield will be better and more consistent. Also i have found you can get both lights pretty close to the canopy, But also different strains different requirements another factor of dialling that environment in. Goddam I love growing and growing you never stop adapting to the constant requirements of these unbelievable plants. Peace Love and Dirt.

Next article will be a intro on myself and what my background is and how I got here, I hope you enjoy these posts, Ill be doing more and getting to say our piece regarding the industry coming from a normal hobby grower bringing good honest business to a growing community.

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