Is this even possible? 650w Meijiu Bar Light. 3.0 umol/J. LM301H and Osram. 1950 PPFD!!!!

DrKiz · Jul 10, 2020

Gwhiliker said:
whats the appropriate coverage for one of these 650... i was gonna order a few 720w bava quantum boards for around the same price but after reading about these im starting to change my mind..

I had three Bava 240’s in a tent. Sold one and replaced them with a MJ-650. I like the even canopy. I think it’s like one of the most important part in my style of growing.

DrKiz · Jul 10, 2020

Onymous21 said:
Looking at the 1000w octopus. Not worried bout electric cost so much as I am production. I have a few patients I grow for and just want to be able to keep up with their demands

Two 800’s more than cover a 9 x 5. ‘Bout 4 pounds.

DrKiz · Jul 10, 2020

newbplantgrower420 said:
Im going for 3 with these Meijiu 650s I ordered. Ill have a few test runs with it in a 4x8 and see how the yield and quality fair against 1kw DE HPS in a side by side.

That would be sweet to see the difference.

I’m running two different Majo’s side by side. One 3000k with 660nm, the other 3000k with 660, 730 and 385.

Hard pressed to see a difference after three runs.

The difference between those and a 5000k I can see. But between the two, I’d need lab work lol.

Gwhiliker · Jul 10, 2020

DrKiz said:
I had three Bava 240’s in a tent. Sold one and replaced them with a MJ-650. I like the even canopy. I think it’s like one of the most important part in my style of growing.

i had originally planed on running 2 630w Cmh on either side of a 720w board in a well ventilated 5x10 tent, just weighing my options here. if i can use less wattage to create the same yield id rather do that, and i dont really think 70w is that much in the aspect. i would replace the board with a 650 and still run the 630w on either side. i believe i can get a pretty good quality bud from this mix, i just wish i could figure out how to spread the light more evenly between the 2 sources instead of only having 2 points of intersecting light. but for cost efficiency this seems to be my best route to do what id like to do

DrKiz · Jul 10, 2020

Gwhiliker said:
i had originally planed on running 2 630w Cmh on either side of a 720w board in a well ventilated 5x10 tent, just weighing my options here. if i can use less wattage to create the same yield id rather do that, and i dont really think 70w is that much in the aspect. i would replace the board with a 650 and still run the 630w on either side. i believe i can get a pretty good quality bud from this mix, i just wish i could figure out how to spread the light more evenly between the 2 sources instead of only having 2 points of intersecting light. but for cost efficiency this seems to be my best route to do what id like to do

Yeah, I’d be interested to see that too. I hear that the CMH/LED combo produces spectacular results.

Plus if you need the heat it’s a bonus adding the CMH.

Gwhiliker · Jul 10, 2020

DrKiz said:
Yeah, I’d be interested to see that too. I hear that the CMH/LED combo produces spectacular results.

Plus if you need the heat it’s a bonus adding the CMH.

i agree... but still not sure if the 70w loss is made up for by the spread. the bava claims 2.5μmol/J efficiency Light output (PPF):1800μmol/s
and ill be honest... ive been doing quite a bit of research on a lot of stuff but what that means is not something ive reached yet, so a little help in this would be greatly appreciated

Bava High Efficiency 720w Quantum Grow Lamp Samsung Lm301h Full Spectrum Uv Ir Led Grow Light With 4 Switches - Buy Led Grow Light lm301h uv Ir Led Grow Lamp Product on Alibaba.com

www.alibaba.com

these are around 3k for the 5 id need

Barristan Whitebeard · Jul 10, 2020

Gwhiliker said:
i agree... but still not sure if the 70w loss is made up for by the spread. the bava claims 2.5μmol/J efficiency Light output (PPF):1800μmol/s
and ill be honest... ive been doing quite a bit of research on a lot of stuff but what that means is not something ive reached yet, so a little help in this would be greatly appreciated

Bava High Efficiency 720w Quantum Grow Lamp Samsung Lm301h Full Spectrum Uv Ir Led Grow Light With 4 Switches - Buy Led Grow Light lm301h uv Ir Led Grow Lamp Product on Alibaba.com

Bava High Efficiency 720w Quantum Grow Lamp Samsung Lm301h Full Spectrum Uv Ir Led Grow Light With 4 Switches - Buy Led Grow Light lm301h uv Ir Led Grow Lamp Product on Alibaba.com

www.alibaba.com

these are around 3k for the 5 id need

PPF (photosynthetic photon flux) is the total amount of light that a given fixture puts out. So according to Bava, the light you were looking has a light output of 1800 μmol/s at full power.

Gwhiliker · Jul 10, 2020

Barristan Whitebeard said:
PPF (photosynthetic photon flux) is the total amount of light that a given fixture puts out. So according to Bava, the light you were looking has a light output of 1800 μmol/s at full power.

so these output more light on a greater spread with less wattage then? the 650w that is

Barristan Whitebeard · Jul 10, 2020

Gwhiliker said:
so these output more light on a greater spread with less wattage then? the 650w that is

They are claimed to be more efficient yes, and the bars do spread the light very evenly.

No matter how appealing a certain light may look though, some interested parties will always doubt the veracity of these manufacturers claims without 3rd party testing.

SourDeezz · Jul 13, 2020

Nicer spectrum on this light, similar price.

Geekbeast Pro 630w Led Grow Light Bar Lm301b/seo 3030 Uv Ir Mix 660nm Average Ppfd Dimmable Mw Driver For Indoor Grow Plants - Buy Geekbeast Pro 630w,Lm301b/seoul 3030 Uv Ir 660nm,Indoor Grow Plants Product on Alibaba.com

Geekbeast Pro 630w Led Grow Light Bar Lm301b/seo 3030 Uv Ir Mix 660nm Average Ppfd Dimmable Mw Driver For Indoor Grow Plants - Buy Geekbeast Pro 630w,Lm301b/seoul 3030 Uv Ir 660nm,Indoor Grow Plants Product on Alibaba.com

www.alibaba.com

newbplantgrower420 · Jul 13, 2020

SourDeezz said:
Nicer spectrum on this light, similar price.

Geekbeast Pro 630w Led Grow Light Bar Lm301b/seo 3030 Uv Ir Mix 660nm Average Ppfd Dimmable Mw Driver For Indoor Grow Plants - Buy Geekbeast Pro 630w,Lm301b/seoul 3030 Uv Ir 660nm,Indoor Grow Plants Product on Alibaba.com

Geekbeast Pro 630w Led Grow Light Bar Lm301b/seo 3030 Uv Ir Mix 660nm Average Ppfd Dimmable Mw Driver For Indoor Grow Plants - Buy Geekbeast Pro 630w,Lm301b/seoul 3030 Uv Ir 660nm,Indoor Grow Plants Product on Alibaba.com

www.alibaba.com

i messaged the supplier the other day for the diode count.

she said "Total diodes is 1512pcs lm301h 72pcs osram 660nm 24pcs lg uv 24pcs osram ir." Thats 1632 diodes. bk said MJ-650 has like ~2500 earlier on this thread. They claim to outlight the MJ-650s at the same distance. I dont think its going to be putting more light as the MJ 650s while having ~1000 less diodes. Something seems off.

But I could be wrong... one of us would have to sacrifice some cheddar cheese to find out surely.

Onymous21 · Jul 13, 2020

The more I look at all of these, the more I think I’m just going to get the roi 680

SourDeezz · Jul 13, 2020

Even after their diodes melting?

Onymous21 · Jul 13, 2020

SourDeezz said:
Even after their diodes melting?

??

SourDeezz · Jul 13, 2020

Onymous21 said:
??

New roi-e720 available in few days. Would this be a better upgrade from 1000w se hps?

melted diodes???? That had to be a fault on the customer. Well I'm still gonna take the risk and get 2. That warranty better hold lol Companies like Spider Farmer/Mars from what I can tell and have read will void their warranty if they find the drivers have been turned up past their factory and...

www.rollitup.org

Norml56 · Jul 14, 2020

DrKiz said:
Yeah, I’d be interested to see that too. I hear that the CMH/LED combo produces spectacular results.

Plus if you need the heat it’s a bonus adding the CMH.

I will always run a CMH/LED combo. I'm never disappointed with the results even when I fuck things up.

p0opstlnksal0t · Jul 30, 2020

You guys know the specs on those 256 Meijiu strips? Voltage and max amps? im guessing 48v since they use 48v drivers and their boards are 48v but i dont see how they bank the LED's to 48v on these strips lm301b is what 2.7v and .2a each? so roughly 18 diodes per bank = 48v @DrKiz

Rocket Soul · Jul 30, 2020

p0opstlnksal0t said:
You guys know the specs on those 256 Meijiu strips? Voltage and max amps? im guessing 48v since they use 48v drivers and their boards are 48v but i dont see how they bank the LED's to 48v on these strips lm301b is what 2.7v and .2a each? so roughly 18 diodes per bank = 48v @DrKiz

They would be 16, not 18. 16x16=256. And as you increase towards 0.2A the voltage will be higher than 2.7V more like 3 per diode.

p0opstlnksal0t · Jul 30, 2020

so 16 x .2a = 3.2a max per strip? seems high since their 288 boards are 1a max

p0opstlnksal0t · Jul 30, 2020

Rita fang: the cheapest to customize is the A8, what's more it support daisy chain, voltage also is 48V and 0.9amps per strip

Is this even possible? 650w Meijiu Bar Light. 3.0 umol/J. LM301H and Osram. 1950 PPFD!!!!

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