Growing 2x2 With ViparSpectra XS1500 Pro

[7Dust2]

Your plants look great , I’m at 75% and 11inches. I noticed too that the plant definitely grows more if the lites alittle further away , I’m moving mine to 15 inches too I like the way you explained it , informative

Yeah I put mine so it be a 3" inches of grow room just one case mines is 15 inches away. That three inches. So I do t have to keep staring at the plant. If I miss checking one day. No worries. I can see a big growth so I instantly move it up two clicks . Help me remember. And a pattern so if get off a little I can tell.
I have. Found out that yeah it's recommend under right conditions. Here I don't have that luxurious in controlled everything. So I have to adjust to what happens in growing these plants. Cause we don't have their right conditions. They might test in a desert and I may be in the Amazon. So I give a space I can keep my plant and my grow best chances I can. Cause we not in their same labatory

 

[7Dust2]

Plant will not willing burn itself . I have never moved the light in my flowering tent . I move the floor up. But I let plants grow to it. I always give 3-6 inches of growth. Cause flowering tents it will grow 6 inches sometimes in one 48 hour period. Seems like in one day. Sometimes. This is my flowering tent. I keep plants 12-16 inches away from tops. But u can see what one plant did. On it's own. It's maybe 3 inches from light but growing in-between the light bars. Now this something I just do. . recommend is safe .

 

[7Dust2]

If you here alot me say cycles I mean this.

 

[7Dust2]

And some more things to help you it's a lot of stuff. But key is keep it simple For you. You can make it a job if you want to. But do it for you. .

 

[7Dust2]

And all that turns into this.

 

[Old G]

Good info thank you, I moved my lite up to 17 inches. The leaves were curled inwards so I’m thinking too much lite for a plant at 11 days. These lites are potent, that’s funny I move my lites 2 clicks at a time too

 

[Delps8]

The new model of this light looks like a total winner. I have the XS-1500 and it's a nice light but the Pro model is huge improvement. To me, it's the best 2' x 2' light on the market.

The vendors recommendations will get you in the ballpark but they will tend to be conservative, for a variety of reasons. In an earlier message, you wrote "What I do is worry about Mostly light burn. Most common mistake in lights is people tend to burn the tops of the plants and it destroys the growth rate."

I disagree, strongly. I've been reading four cannabis sites since I started growing (again) two years ago and, time and time again, I read grow journals where there is no mention of light levels and plants show significant symptoms of not having enough light. I've only read a couple of journals where LED have caused problems, one reason being that it's not easy to damage a plant when using an LED grow light. LED's give off very little or no IR light so there are no photons at the wavelength that generate heat in organic material. The lights do get warm, and therefore warm the tent, but they don't burn plants the way gas discharge lights could easily fry your grow.

If you check any of my grow journals, you can see my light data and, yup, the light saturation point for cannabis in a non-CO2-enhanced environment is about 800-1000µmols. Vipar recommendations get that high for flower but their setting for seedlings and veg are far lower than I would use.

I get it that you might want to stay with what Vipar recommends but, if not, get a PAR meter or a light meter to do what you can to get light levels on your plant as close to the light saturation point as possible. The reason - research indicates that plant quality and yield and crop quality and yield increase in an almost linear manner as light levels increase*.

As an engineer, you'll like it that there's a formula for the yield curve.

Source is as cited.

 

[7Dust2]

The new model of this light looks like a total winner. I have the XS-1500 and it's a nice light but the Pro model is huge improvement. To me, it's the best 2' x 2' light on the market.

The vendors recommendations will get you in the ballpark but they will tend to be conservative, for a variety of reasons. In an earlier message, you wrote "What I do is worry about Mostly light burn. Most common mistake in lights is people tend to burn the tops of the plants and it destroys the growth rate."

I disagree, strongly. I've been reading four cannabis sites since I started growing (again) two years ago and, time and time again, I read grow journals where there is no mention of light levels and plants show significant symptoms of not having enough light. I've only read a couple of journals where LED have caused problems, one reason being that it's not easy to damage a plant when using an LED grow light. LED's give off very little or no IR light so there are no photons at the wavelength that generate heat in organic material. The lights do get warm, and therefore warm the tent, but they don't burn plants the way gas discharge lights could easily fry your grow.

If you check any of my grow journals, you can see my light data and, yup, the light saturation point for cannabis in a non-CO2-enhanced environment is about 800-1000µmols. Vipar recommendations get that high for flower but their setting for seedlings and veg are far lower than I would use.

I get it that you might want to stay with what Vipar recommends but, if not, get a PAR meter or a light meter to do what you can to get light levels on your plant as close to the light saturation point as possible. The reason - research indicates that plant quality and yield and crop quality and yield increase in an almost linear manner as light levels increase*.

As an engineer, you'll like it that there's a formula for the yield curve.

Source is as cited.

I seen on people post. On straight 1500. But I got the xs1000 and the pro1500 and wow yeah the difference between them two. Is night and day. Hands down. I can imagine it does give it a run for it's money. As well.

 

[7Dust2]

The new model of this light looks like a total winner. I have the XS-1500 and it's a nice light but the Pro model is huge improvement. To me, it's the best 2' x 2' light on the market.

The vendors recommendations will get you in the ballpark but they will tend to be conservative, for a variety of reasons. In an earlier message, you wrote "What I do is worry about Mostly light burn. Most common mistake in lights is people tend to burn the tops of the plants and it destroys the growth rate."

I disagree, strongly. I've been reading four cannabis sites since I started growing (again) two years ago and, time and time again, I read grow journals where there is no mention of light levels and plants show significant symptoms of not having enough light. I've only read a couple of journals where LED have caused problems, one reason being that it's not easy to damage a plant when using an LED grow light. LED's give off very little or no IR light so there are no photons at the wavelength that generate heat in organic material. The lights do get warm, and therefore warm the tent, but they don't burn plants the way gas discharge lights could easily fry your grow.

If you check any of my grow journals, you can see my light data and, yup, the light saturation point for cannabis in a non-CO2-enhanced environment is about 800-1000µmols. Vipar recommendations get that high for flower but their setting for seedlings and veg are far lower than I would use.

I get it that you might want to stay with what Vipar recommends but, if not, get a PAR meter or a light meter to do what you can to get light levels on your plant as close to the light saturation point as possible. The reason - research indicates that plant quality and yield and crop quality and yield increase in an almost linear manner as light levels increase*.

As an engineer, you'll like it that there's a formula for the yield curve.

Source is as cited.

I like that chart where did you find that at. I needed that. I been figuring it in my head. Cause I rule everything on phosphorus calcium magnesium . Why I use firewood ash so much. It replenish the most main things keeps plant green. . I have green eyes. Lmao. FYI. Jk. Thought I would throw thet funny sht in there.

 

[Delps8]

I like that chart where did you find that at. I needed that. I been figuring it in my head. Cause I rule everything on phosphorus calcium magnesium . Why I use firewood ash so much. It replenish the most main things keeps plant green. . I have green eyes. Lmao. FYI. Jk. Thought I would throw thet funny sht in there.

Humor works!

Google the title of the paper and you'll be able to download a copy of the PDF. Some growers are familiar with "the Chanda paper" ("Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO2 conditions") that shows that the curve for photosynthesis starts to roll off at about 500µmols but the mistake is to assume that net photosynthesis is a valid proxy for growth or growth rate.

Per the Frontiers in Science paper (the "Zheng paper"), net P might decrease but yield and quality actually increase, though there is some rolloff.

For me, it's the more light, the better.

Having said that, I have had two instances of "light damage". In one case, a cola bent away from the light at about a 22° angle and never straightened out. In the other case, the light was switched on at 100% and I didn't catch it for about an hour minutes. The leaves had started to rotate around the petiole but within about 30 minutes, they had rotated back. Other than that, I've regularly run my plants in the 900+ µmol range and the only downside that I've seen is that it costs me an extra $30 per month for electricity and, second, I have a large inventory of weed in Grove bags.

 

[7Dust2]

Humor works!

Google the title of the paper and you'll be able to download a copy of the PDF. Some growers are familiar with "the Chanda paper" ("Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO2 conditions") that shows that the curve for photosynthesis starts to roll off at about 500µmols but the mistake is to assume that net photosynthesis is a valid proxy for growth or growth rate.

Per the Frontiers in Science paper (the "Zheng paper"), net P might decrease but yield and quality actually increase, though there is some rolloff.

For me, it's the more light, the better.

Having said that, I have had two instances of "light damage". In one case, a cola bent away from the light at about a 22° angle and never straightened out. In the other case, the light was switched on at 100% and I didn't catch it for about an hour minutes. The leaves had started to rotate around the petiole but within about 30 minutes, they had rotated back. Other than that, I've regularly run my plants in the 900+ µmol range and the only downside that I've seen is that it costs me an extra $30 per month for electricity and, second, I have a large inventory of weed in Grove bags.

That's funny. Stuff I just got thru 1800 electro gardening guy dude. That introduced it to world. And effects of frequencies to plants and animals. My brain hurts now. . lmao. Smoke break.

 

[7Dust2]

Humor works!

Google the title of the paper and you'll be able to download a copy of the PDF. Some growers are familiar with "the Chanda paper" ("Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO2 conditions") that shows that the curve for photosynthesis starts to roll off at about 500µmols but the mistake is to assume that net photosynthesis is a valid proxy for growth or growth rate.

Per the Frontiers in Science paper (the "Zheng paper"), net P might decrease but yield and quality actually increase, though there is some rolloff.

For me, it's the more light, the better.

Having said that, I have had two instances of "light damage". In one case, a cola bent away from the light at about a 22° angle and never straightened out. In the other case, the light was switched on at 100% and I didn't catch it for about an hour minutes. The leaves had started to rotate around the petiole but within about 30 minutes, they had rotated back. Other than that, I've regularly run my plants in the 900+ µmol range and the only downside that I've seen is that it costs me an extra $30 per month for electricity and, second, I have a large inventory of weed in Grove bags.

Lmao. You done some studies. Lmao. I lean more to minerals side. But that's because job for many years. In metal and special metals that go in other things. Element 115 stuff. But we had to go to school for plants cause they use same thing humans use. So I had to pass the class. Lmao. And trust me I was a D student.

 

[024backwards]

Humor works!

Google the title of the paper and you'll be able to download a copy of the PDF. Some growers are familiar with "the Chanda paper" ("Photosynthetic response of Cannabis sativa L. to variations in photosynthetic photon flux densities, temperature and CO2 conditions") that shows that the curve for photosynthesis starts to roll off at about 500µmols but the mistake is to assume that net photosynthesis is a valid proxy for growth or growth rate.

Per the Frontiers in Science paper (the "Zheng paper"), net P might decrease but yield and quality actually increase, though there is some rolloff.

For me, it's the more light, the better.

Having said that, I have had two instances of "light damage". In one case, a cola bent away from the light at about a 22° angle and never straightened out. In the other case, the light was switched on at 100% and I didn't catch it for about an hour minutes. The leaves had started to rotate around the petiole but within about 30 minutes, they had rotated back. Other than that, I've regularly run my plants in the 900+ µmol range and the only downside that I've seen is that it costs me an extra $30 per month for electricity and, second, I have a large inventory of weed in Grove bags.

Great stuff Delps and I agree. I try to give my girls max light and then back away from there if they don't like it. I grew a Bruce Banner and Grandaddy Purple and never took the light (Spyder Farmer SF1000) off 100% after the first 1-2 weeks. My last grow, a Mimosa Evo x Orange Punch, was light shy so I had to turn it down to a more traditional intensity like Vipar is recommending out of the box.

 

[Delps8]

Lmao. You done some studies. Lmao. I lean more to minerals side. But that's because job for many years. In metal and special metals that go in other things. Element 115 stuff. But we had to go to school for plants cause they use same thing humans use. So I had to pass the class. Lmao. And trust me I was a D student.

Element 115 - huh! 115? Yikes! When I took physics, there were 92 (checks Google).

OK, there may have been more but, perhaps, I was thinking 92 because that's how many naturally occurring elements there are. And it's up to 118 now. You guys have been busy!

 

[Delps8]

Great stuff Delps and I agree. I try to give my girls max light and then back away from there if they don't like it. I grew a Bruce Banner and Grandaddy Purple and never took the light (Spyder Farmer SF1000) off 100% after the first 1-2 weeks. My last grow, a Mimosa Evo x Orange Punch, was light shy so I had to turn it down to a more traditional intensity like Vipar is recommending out of the box.

Good to hear that you're feeding your plants. Any impressions about the harvest yield and quality vs other grows where you weren't giving them as much light.

What was the difference in light levels for the Minosa and Orange Punch vs the BB and the Grandaddy Purple?

I think I've seen BB for sale in a few places. Isn't that a high THC strain?

 

[7Dust2]

Element 115 - huh! 115? Yikes! When I took physics, there were 92 (checks Google).

OK, there may have been more but, perhaps, I was thinking 92 because that's how many naturally occurring elements there are. And it's up to 118 now. You guys have been busy!

Lmao. Yeah a lot is black bag crap. But coming to light more and more. Love it. Like watching a show.

 

[7Dust2]

Good to hear that you're feeding your plants. Any impressions about the harvest yield and quality vs other grows where you weren't giving them as much light.

What was the difference in light levels for the Minosa and Orange Punch vs the BB and the Grandaddy Purple?

I think I've seen BB for sale in a few places. Isn't that a high THC strain?

Y'all got me I shut my brain down when I retired year ago.. now I'm just dumb redneck from the Appalachian hills. Where my sister is my wife . Lmao. Jk. But yeah it happens here. Why I live here. No one messes with anyone. . and pretty view.

 

[Delps8]

Lmao. Yeah a lot is black bag crap. But coming to light more and more. Love it. Like watching a show.

"black bag"?

Must be great to watch science/discovery unfold while you're working in a given field. I got into software in the early 90's. Quite a bit has changed since 8 MHz and $90 for 256kb of RAM.

 

[7Dust2]

"black bag"?

Must be great to watch science/discovery unfold while you're working in a given field. I got into software in the early 90's. Quite a bit has changed since 8 MHz and $90 for 256kb of RAM.

Oh trust me. Them guys just important. Wait till you find out how they found out to put things on a chip. They found a cave and these crystals have data on them that is limitless. It's syfy sht. But really. You will see soon. Small pieces are being released now. I been seeing it since 90s . Some of tech I seen was out there. But now. Just modified to what u have now.. cause u or anyone else. Can't tell me how a computer works truly what makes it so what it does and how u found how to use that tech. Lmao. 2000 years u built a wheel . But in 45 years u did cars ships phones. U name it. But wait . They have to release alot of tech before 2034. . Or they get in trouble. It's a lot sht going on . Movie. Popcorn and a smoke.

 

[Delps8]

Y'all got me I shut my brain down when I retired year ago.. now I'm just dumb redneck from the Appalachian hills. Where my sister is my wife . Lmao. Jk. But yeah it happens here. Why I live here. No one messes with anyone. . and pretty view.

If you're retired, you're automatically older than me!

I was at Ft. Knox for one tour. "Daddy, you're crushing my Marlboro's" - you know the joke…

Love the Appalachians and mountains in general. What state? I spent time at Ft. Bragg NC and then lived in Raleigh as a civilian.

No one messes with anyone. . and pretty view.

Great combination! Let people live in peace. What a concept.