Loopusmagpie2u
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Does what?It absolutely does.
Increase demand for calcium, magnesium, potassium, zink and ironDoes what?
Sorry should have quoted the OP. I am 100% in agreement with you. And spectral effects are in large part why in addition to intensity.I know its a discussed topic non stop. Some people argue to death led doesnt cause the need for more mag. I also feel calmag is such a boy who cried wolf scenario. Cal/mag has been screamed so many times nobody would actually believe they had a calcium or magnesium problem if that was indeed the problem. I have ran tests and it is 1000% IMO and IME that Led dialed rooms need a lot of magnesium, strain specific. Here is a peanut butter breath the older growth is showing some deficiencies. I gave 0 magnesium supplement this first week after transplant and turned lights up to 400ppfd. The plant in 2 days had interveinal chlorosis within 5 days it turned necrotic. I then foliared magnesium and root drenched magnesium with my nutrient schedule and viola the new growth is lush and healthy. I should mention my soil slurry is right on point at 6.6ph 500ppm 1 day after a 1800ppm organic bottle feed at 6.4ph. My starting water is 140ppm 7.2ph. I added 7.5ml of mag amped/gallon in each feed these last few days. Hlg 600r 36” from canopy. Ppfd was raised from 300-400 over a weeks time. The older leaves were healthy before the light increase, you can see the middle of the damaged leaves are a nice green with a healthy vein.
Old growth pre mag supplements soon as I increased ppfd:
View attachment 1181906View attachment 1181907View attachment 1181911
Few days after supplementing magnesium.
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So does all this mean that even with well water ( I've never used cal/mag ) should I supplement my grow under an sf1000 with it. I have a bottle of the stuff, I bought when I thought it was needed but you saw my 120ppm well water chemical analysis 2 years ago and said it wasn't necessary under my t5's or my hps.An interesting study here.
An Overview of LEDs’ Effects on the Production of Bioactive Compounds and Crop Quality
Light-emitting diodes (LEDs) are characterized by their narrow-spectrum, non-thermal photon emission, greater longevity, and energy-saving characteristics, which are better than traditional light sources. LEDs thus hold the potential to revolutionize ...www.ncbi.nlm.nih.gov
And a good read on spectral effects here.
Frontiers | An Update on Plant Photobiology and Implications for Cannabis Production
This review presents recent developments in plant photobiology and lighting systems for horticultural crops, as well as potential applications for cannabis (...www.frontiersin.org
I don't know what your well water has in it, regarding Mg. I would consider adding a little cal/mag to one plant and see how it does compared to the others. But the Mg, N and K thing has kicked my butt, trying to figure out if I could fortify a soil enough to remain organic (I decided to go pseudo-organic — organic with regular feedings of organic supplements).So does all this mean that even with well water ( I've never used cal/mag ) should I supplement my grow under an sf1000 with it. I have a bottle of the stuff, I bought when I thought it was needed but you saw my 120ppm well water chemical analysis 2 years ago and said it wasn't necessary under my t5's or my hps.
I just turned a girl 2 days ago, under the sf1000 would adding cal/mag be beneficial at this point?...I'm expecting a larger light this week (SE3000) then I'll replace the sf1000 with this new light to finish flowering.
How much alfalfa did you use and how much more would have been better? I’ve got a few pellets in the soil of a 5 gal fabric pot and would rather use that (top dress) than cal/mag if it works. The liquid is a known quantity but the pellets break down on their own schedule.I don't know what your well water has in it, regarding Mg. I would consider adding a little cal/mag to one plant and see how it does compared to the others. But the Mg, N and K thing has kicked my butt, trying to figure out if I could fortify a soil enough to remain organic (I decided to go pseudo-organic — organic with regular feedings of organic supplements).
BTW, alfalfa meal seems to have some Mg, but I didn't put enough of it in the soil to satisfy the plants.
I only have the one plant under led lighting. I was offered this light from Spider Farmer and I'm just learning growing with these lights. So far its doing fine but I was wondering if a cal/mag supplement would be beneficial or detrimental under normal circumstances with led lights.I don't know what your well water has in it, regarding Mg. I would consider adding a little cal/mag to one plant and see how it does compared to the others. But the Mg, N and K thing has kicked my butt, trying to figure out if I could fortify a soil enough to remain organic (I decided to go pseudo-organic — organic with regular feedings of organic supplements).
BTW, alfalfa meal seems to have some Mg, but I didn't put enough of it in the soil to satisfy the plants.
I add about 1/2 gram of epsom to every water both flower and veg and I’ve had very limited calmag problems since! I mix tap water (400 ppm) and purified water down to 200 ppm then add my nutes - just my experienceSo does all this mean that even with well water ( I've never used cal/mag ) should I supplement my grow under an sf1000 with it. I have a bottle of the stuff, I bought when I thought it was needed but you saw my 120ppm well water chemical analysis 2 years ago and said it wasn't necessary under my t5's or my hps.
I just turned a girl 2 days ago, under the sf1000 would adding cal/mag be beneficial at this point?...I'm expecting a larger light this week (SE3000) then I'll replace the sf1000 with this new light to finish flowering.
That's right. I have no idea what the alfalfa meal's schedule is on breaking down and releasing it's goodies.How much alfalfa did you use and how much more would have been better? I’ve got a few pellets in the soil of a 5 gal fabric pot and would rather use that (top dress) than cal/mag if it works. The liquid is a known quantity but the pellets break down on their own schedule.
I mean it depends on your base nutrients and ratios. If you don't see a deficiency then you don't need to adjust.So does all this mean that even with well water ( I've never used cal/mag ) should I supplement my grow under an sf1000 with it. I have a bottle of the stuff, I bought when I thought it was needed but you saw my 120ppm well water chemical analysis 2 years ago and said it wasn't necessary under my t5's or my hps.
I just turned a girl 2 days ago, under the sf1000 would adding cal/mag be beneficial at this point?...I'm expecting a larger light this week (SE3000) then I'll replace the sf1000 with this new light to finish flowering.
Ya thanks, I just see all this talk on cal/mag and it seems to be go to cure all for whats ailing plants. I do get spots, turned leaves, and other minimal concerns. Some leaves don't look right on every grow most look just fine I just shrug it off to me fking up some how or I've done some abuse to them somewhere along the way....I do have one sad looking girl lol poor thing I don't think even cal / mag would have helped her...Not sure what I did but she's looking pretty rough with tiny little buds at 6+ weeks..I mean it depends on your base nutrients and ratios. If you don't see a deficiency then you don't need to adjust.
I use mega crop and I add 1 gram per gal of Epson salt because I need it
Most of the time it's mag... calcium is usually fine. Most water sources have adequate cal and lack in mag as often I found in fertilizer also. I haven’t ever needed more calcium but almost always needed additional mag.Ya thanks, I just see all this talk on cal/mag and it seems to be go to cure all for whats ailing plants. I do get spots, turned leaves, and other minimal concerns. Some leaves don't look right on every grow most look just fine I just shrug it off to me fking up some how or I've done some abuse to them somewhere along the way....I do have one sad looking girl lol poor thing I don't think even cal / mag would have helped her...Not sure what I did but she's looking pretty rough with tiny little buds at 6+ weeks..
Bought a gallon jug of calmag 2 years ago for my soil grow , used it and fucked 2/3 grows stopped using it and it’s been sitting for 2 years prolly should pitch it ! Lol along with GH nutes ,Most of the time it's mag... calcium is usually fine. Most water sources have adequate cal and lack in mag as often I found in fertilizer also. I haven’t ever needed more calcium but almost always needed additional mag.
Ppl usually say just add cal mag when infact its usually the extra N, mag or iron that's needed.
Yas I also use the GH nutes. in promix or other peat mixes. I just bought a quart a couple of years ago I thought I should have it....Why.?..Who the fk knows...lol thought I might need it some day I guess....Its just when I see anything wrong I think Cal/mag the wonder juice? maybe I'm missing something not using it... I think as Aqua man says mag and not the calcium might be more beneficial to my grow....I should start using 1tsp or 5ml /gal Epsom salts on every watering
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