King Plus LED Grow Lights

[CoberBrandon]

I’ve got some fuct shit
going on in this Grow... I gotta get to the bottom of it , I have been just lagging on this Grow all together , when I get home I’ll post what im dealing with now

[CoberBrandon]

Thanks man , you described perfectly the outcome I had
with my morsen lights lol

[DingusKhan]

Those look really tasty, Brandon.

That's how I described how I've been doing it. I started with a budget light, a GalaxyHydro 300, pretty cheap, but did the trick. I let my plant vet a little too long, and got a little too big for the light's footprint. My buds weren't larfy, but they weren't very dense either. Kinda like marshmallow density. Very very frosty, though. A popcorn nug would light easily, give a nice, thick, greasy plume of smoke, and the bud would burn away to a very small wisp of ash.

Now I use 2 of those and a Roleadro COB 400 that shines white, not purple. I like it for that reason alone, and it's about the right size for the plants I grow. My buds are denser, but could be better. So I'm saving up for either a ViparSpectra 600 reflector or similar vs an LC315 or similar LEC.

Instead of measuring and calculating, I've been slowly adding more smaller lights instead of getting one giant expensive one, and then play with distances and arrangements, and all that, backing off when I think it's too much. You know, give the right amount of light for the size of plant as she seems to need it. It's not the most efficient way to find what works, but it's the way that I enjoy the process of discovery most.

[CoberBrandon]

That’s not really what i do man... the lights are
purchased just in case and as I did my last Grow I maybe could have added one more towards the end . My
buds never came out small and leafy , but rather on one plant large and not too dense.... but it’s how I had the lights positioned that helped this as well.... the Lux meter was designed to be for LED measuring and from the way I have it working , even if it’s not accurate it seems to be pretty close to help me not cause burning . I put a pic of the bud I grew with LED for my first time, to me I could have had these buds larger , the other plant produced larger buds that werent as dense and it was under a smaller watt panel for most of the Grow

[DingusKhan]

But it does seem clear that a cheap lux meter is not helpful for measuring the blurple LED that I love to rock cuz they're cheep too. Will they work for the white-light COB LEDs?

Is there an effective alternative for measuring the blurple light? Or do we just keep titrating our way to a functional proportionality, adding more light if our buds keep coming out small and larfy?

[Waltermelon]

I didn't mean to say that the measure was useless. It could be, say if the par was COMPLETELY missed in the spectrum. But lux can be useful IF you know you're par is correct.
I try to stay away from absolutes like never and always useless falls in there also. If someone uses those words, I'm usually about 98% sure it's false.

[DoctorJohnson]

You are correct it can be converted, but I didn't see any conversion for LEDs? Also with so many different bands by the different manufacturers using different wavelengths, reflectors, lenses, I think that calculation gets a bit muddied? I guess if you know the spectrum, and find the light closest to the spectrum of your LEDs, you can get close though

You're right, although conversion between lux and PPFD is theoretically possible, it doesn't seem practical. I was reacting to the seeming notion that lux is a useless measure. It's not. For anything but the candy colored rainbow of LED lights, it works fine (like for MH, HPS, LED light bulbs, and CFL). You don't need an absolutely perfect value for the measurement to be useful. Relative values work too. Just sayin'...

[Waltermelon]

You are correct it can be converted, but I didn't see any conversion for LEDs? Also with so many different bands by the different manufacturers using different wavelengths, reflectors, lenses, I think that calculation gets a bit muddied? I guess if you know the spectrum, and find the light closest to the spectrum of your LEDs, you can get close though

[DoctorJohnson]

Lux is also not the ideal unit of measure. Lux is intensity, m/moles is density. Lux and lumens are for humans ;-)

Lux is lumens per square meter and a valid way to measure light. Though I've only used lux to measure white-ish light, you can convert between PPFD and lux using a conversion factor. https://www.apogeeinstruments.com/co...n-ppfd-to-lux/

[Waltermelon]

Lux is also not the ideal unit of measure. Lux is intensity, m/moles is density. Lux and lumens are for humans ;-)

[Waltermelon]

That chart is usually incorrect. I go by lux and I’ve got a LED Lux meter to help me with it , at Veg I like 70,000 max and at flower you can push to 90,000lux especially having 4 plants.

I absolutely agree with the bait and switch sentiment, but it has to be close or there would be some kind of lawsuit involved at some point. I like to use dodge and Mazda as an example. When the srt4 neon came out dodge understated the hp, when the Mazda rx8 came out Mazda overstated the hp. Guess who got sued? Some understate some overstate. But if you go into it with some healthy scepticism, take a good look, do a bit of digging, you can come up with a pretty good understanding of who's closer to the truth and a good idea of how far away from the truth something is. I don't just go blowing $100 here or there.

[CoberBrandon]

But you have to watch the plants and know when to step up the light

[CoberBrandon]

That chart is usually incorrect. I go by lux and I’ve got a LED Lux meter to help me with it , at Veg I like 70,000 max and at flower you can push to 90,000lux especially having 4 plants.

[Waltermelon]

It’s hard to say man, I think through flowering they can take a lot of light. I only used the two lights last Grow and got 4oz from 2 plants . They never suffered light burning , so why not test the limits.... LED light is a lot weaker than advertised .... Thanks for the welcome!!!! The avatar pic is from a friend , it was taken in Florida lol , I am from Canada , you can call em an Ice Mexican lmao

You can check the advertised flux on eBay or Amazon's product site. It's usually in a picture form with different distance's listed with numbers in a circle. From what I've seen 1000-1500 u/moles sec without co2 is what you want to shoot for with LEDs. Most of the companies put out that chart, the ones that don't, I would stay away from.
I run 2 600w LEDs in a 3x3 at 18". It puts me right at 1200 m/moles sec avg through the entire canopy.

[CoberBrandon]

I won’t add them all at once and I only add when they look stretchy , I may not need them all in the end your right.