Lighting LED and CalMag discussion.

[Eekman]

If it helps,

I had to move my Flowering Sweet n Lows out of the LED into the greenhouse when they were in week seven of flower (PHOTOS),
They both showed good signs of the cal mag issue you all speak of.

After four days in the green house they were all recovering and getting nice and green again.

Which could mean anything, but it is out there.

Finished up nice, and I had a toke or two before cure, and two thumbs up. heh heh heh

Hope it helps in discussion

Peace

Eek

 

[Guerrilla]

So you think they get a source of cal mag from the sun? Maybe the led doesn't provide that?

 

[Eekman]

Well I WAS thinking lighting, because I didn't add any different nutrients to them at all. Usually at that point I would mix in some calcium, but once I saw they were getting greener I decided not to.

Peace

Eek

 

[Guerrilla]

Dam eek! You might have just discovered the dreaded cal mag led problem!! Can't be a coincidence.

 

[Eekman]

lemme see if I can get some pics on the differnce

back in a bit

Peace

Eek

 

[Eekman]

okay here is before ....



and after ...



Peace

Eek

 

[Red eyed c]

My guess is that the dialed in spectrum/intensity of the leds ups the demand for cal/mag,more than your base nutes can provide.But out in the sun the demand for cal/mag is less and your base nutes or what in your medium will cover the cal/mag needed and has improved the health of your plants mate you won't get cal or mag from the sun

 

[TokinNuggs]

I use Cal-Mg as a base nutrient with my LED set-up. 1 tsp/gal every feeding (Earthjuice) + some soil sweetener (pulverized) as a slower release buffer. It took me a while to figure out how Cal-Mg hungry my plants had become after switching to my UFO LED.

RH seems just as important, mine is pathetically low, and recently am seeing dividends from adding a small humidifier to the closet afer a couple of days, just raising it 5-15%. Seedling growth really seems to benefit the most.

 

[Evo]

Am I facing cal-mag issues?

 

[Villain]

My cal/mg def. Showed different to that, more deep rust holes rather than light patches, looking at pics of problems it looks more like over fertilization?
Hold out for someone who knows and have a bump!