Anthem
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LED tech is an evolving technology and as such changes pretty drastically pretty frequently. You want the latest from whatever manufacturer you buy from.
Viparspectra Pro Series P1500
Full-spectrum, dimmable, 400W HPS/MH replacement. Draws only 150 watts! Perfect for a 2.5'x2.5’ growing area at 16”. Order today!www.ledgrowlightsdepot.com
I own this light. I like it. I am not an expert. I have not flowered with it. I own two and use them in a 32x32 and have them at half power for veg. 1 would be enough, I have two because I originally had two tents (one for my wife's non-pot plants). The spectrum and coverage are as advertised as far as I can tell using my light meter and some conversions. The construction is good. The heatsink disperses so that it runs at about 115 on full blast for me, and that is wicked off pretty fast by my exhaust fan. I know that more red spectrum will help in flower, but that spectrum based on my meter looks okay, so we will see.
Just going on Amazon is very overwhelming. The above site has very good video reviews and the guy is very nice in my dealing with him. I wish I could give you a recommendation based on flowering but I can't. I can tell you that so far I feel good about my light. My internodal spacing is super tight, coverage is good, and it runs cool enough for me.
If you cannot parse information accurately then I cannot help you. I am not, however, a bullshitter. The video I posted shows very clearly what to expect in terms of PPFD. The number you are referring to is the average sum of 4 squares on the chart, which if you look would add up to a square foot. Going off of wattage per square foot is silly when you have more accurate measurements.I have no idea what you were trying to show by posting the video, but the add shows what I said and the video also calls out a different PPFD at 12". If you are just trying to justify the light you bought so be it, but please do not post something that is not true. It just causes more people to buy lights that under perform.
This is a good article. And why I use lux as a guide only. Infact I feel with all the different influences with a grow all measurements should only be used as a guide and we should be learning to read the plants.Here is some good reading information for you to help you understand the LED lighting for Cannabis. I hope you enjoy.
About PAR, PPF, And PPFD
If you're shopping for horticulture grow lights, you may have seen the terms watts, lumens, LUX, foot candles, PAR, PPF, PPFD, and photon efficiency.fluence.science
So if I am understanding you correctly, the chart has a high of 722 and all the other readings are lower and you end up with a PPFD of 1791? Is this new math.If you cannot parse information accurately then I cannot help you. I am not, however, a bullshitter. The video I posted shows very clearly what to expect in terms of PPFD. The number you are referring to is the average sum of 4 squares on the chart, which if you look would add up to a square foot. Going off of wattage per square foot is silly when you have more accurate measurements.
Further, the measurements I have taken on my own plants in terms of lux correlate with what is shown as best as I can tell.
What lux meter did you purchase?If you cannot parse information accurately then I cannot help you. I am not, however, a bullshitter. The video I posted shows very clearly what to expect in terms of PPFD. The number you are referring to is the average sum of 4 squares on the chart, which if you look would add up to a square foot. Going off of wattage per square foot is silly when you have more accurate measurements.
Further, the measurements I have taken on my own plants in terms of lux correlate with what is shown as best as I can tell.
It's per square foot, or 144 square inches (12x12). The other numbers are in 36 square inches (6x6). You add them up to get coverage per square foot. This is a different unit, yes.So if I am understanding you correctly, the chart has a high of 722 and all the other readings are lower and you end up with a PPFD of 1791? Is this new math.
I do not believe you understand how to read the chart. If you take the 4 numbers in the brighter green square you get an average of 624.5. LED Grow Light depot called it out as like 1000 or 1100 at 12" but the information provided by the manufacturer is not constant with that number. They are calling it out as 1791. Basically the large commercial lights, Gavita and Fluence use PPFD to measure their lights performance because it is how we should look at lighting for cannabis. I have added a youtube light to Bruce Bughee's lecture on the matter that pretty much spells out exactly what the plants lighting requirements are and what we should shoot for. Not trying to hate on you, it is just that the manufacturers of some of these LED lights are not truthful in their information. It sucks because you do your research and you think you have the best there is to be had. Take a look at HLG next time they offer accurate information about their lights and they have stuff that will fit in a 32" x 32" tent. My fixtures will not even fit in that tent. 48" x 43"
32 x 32 is 7.11sqft.thars 42.2w/sqftI would say it's a pretty good fit. Your about 8.5 sq ft. Would put you about 35w sq ft. IMO a very good number
Your right32 x 32 is 7.11sqft.thars 42.2w/sqft
The video posted outlines the limit the plant can handle. I want to say somewhere around 2000 m/MOLs. I am going off memory and I could be off. It is kind of a trip becuase stuff like lettuce require so little light.I would just like to add, my two true 180‘s is just barely enough to truly flower my 4x4 Above 1000umol it would be more ideal in a 32 by 32 .. For advanced/supplemental growing
Re: how much light is too much?
Hello, about to set up my 3rd crop and had a question. Im finding higher watt lights than the ones I need. Im not sure of the specifics of over lighting but how much is too much?
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