Nitrogen/magnesium/calcium deficiency and what im planning to do

So, the first jump yesterday seemed ok as far as how the plants took more light. Today I will set the second jump and observe for any tacoing. I was wondering if you've ever observed leaves that don't taco, but suffer from light bleaching? It seems to me I observed that on a previous grow of mine. Any recollection of that in any of your grows in the past? Just curious.
I haven't seen light bleaching and I've run >1300µmol at times.

My understanding is that bleaching was not uncommon using HPS. The only time I've seen "bleaching" discussed with LED's has been from Bugbee and, just recently, Hawley (Fluence). Both sources found the same cause - very high light levels of 660nm light.

At about the mid point in flower for my last grow, I added a set of Spider GlowR80's. By adding the R80's, I was able to get 300µmol of 660 on my grow for 80 watts. That allowed me to reduce the input wattage on my Growcraft by 160 watts. The reduced input wattage + the improved efficiency of the 660 lights (newer diodes and 660 is the most electrically efficient diode) resulted in a > 2° drop in ambient temperature which ensured that my cola temps were well under 78°.

The spectrum for my main light is shown below. The 300µmol from the Spiders would be about 30% of the photons hitting the canopy so the peak in the red region would be significantly higher.

1745520114210.png

The PPFD values for that grow were posted upthread. Below are the PPFD readings for day 86. None of the values are >1100 but most are >1000. Even with a very high % of red and at PPFD's over 1k, there was no bleaching. That's only one plant/grow, granted, but I've used the Growcraft for about a dozen grows now at 1kµmol and never seen any sign of bleaching. Both researchers stated that the issue was that the appearance was off but there was no difference in potency. During the Bugbee interview (I think it was with "We the growers"), one panel member jokingly suggested that they market is as some thing exotic, as it if was an albino strain.

1745519802720.png
 
I haven't seen light bleaching and I've run >1300µmol at times.

My understanding is that bleaching was not uncommon using HPS. The only time I've seen "bleaching" discussed with LED's has been from Bugbee and, just recently, Hawley (Fluence). Both sources found the same cause - very high light levels of 660nm light.

At about the mid point in flower for my last grow, I added a set of Spider GlowR80's. By adding the R80's, I was able to get 300µmol of 660 on my grow for 80 watts. That allowed me to reduce the input wattage on my Growcraft by 160 watts. The reduced input wattage + the improved efficiency of the 660 lights (newer diodes and 660 is the most electrically efficient diode) resulted in a > 2° drop in ambient temperature which ensured that my cola temps were well under 78°.

The spectrum for my main light is shown below. The 300µmol from the Spiders would be about 30% of the photons hitting the canopy so the peak in the red region would be significantly higher.

View attachment 5462425

The PPFD values for that grow were posted upthread. Below are the PPFD readings for day 86. None of the values are >1100 but most are >1000. Even with a very high % of red and at PPFD's over 1k, there was no bleaching. That's only one plant/grow, granted, but I've used the Growcraft for about a dozen grows now at 1kµmol and never seen any sign of bleaching. Both researchers stated that the issue was that the appearance was off but there was no difference in potency. During the Bugbee interview (I think it was with "We the growers"), one panel member jokingly suggested that they market is as some thing exotic, as it if was an albino strain.

View attachment 5462424
Sounds good. Pretty certain my light will have no issues reaching 1000 micromoles, but keeping my canopy below 78° will be impossible, unfortunately.
 
I have had similar problems on previous grows, but haven't learned how not to create these issues. Thank you LewberDewber for weighing in. I've seen pictures of your grows and tbh they look awesome, so I respect your opinion on this. Plus, you grow in the same planters, so there's that.

I am going to try to save them. Maybe a bad idea, but running out of supply, and not growing during the hotter months is why I want to work at rescue. Also, i appreciate your honest take, as hearing you'd likely just start over is definitely not what i want to hear, but is an experienced growers assessment which is what I was hoping for. Not that anyone else who chimed in isn't appreciated, but I think your best suited to give your opinion because you use similar methods, but have very nice results.

As far as your advice for moving forward, I'll go through your advice with my further questions now that I have your attention.

1) So, 20-30%? Ok. Gas Lantern Technique..., I will look up the exact times for it, not sure but will figure out how to program the digital timer to operate this routine. There must be a different light schedule for veg and flower with the gas lantern timing?
2) I didn't have my soil level right up to the top, and maybe this also contributed to the lack of beneficials and the plants not keeping up with the high light levels. Being that I top-dressed with more coots mix medium just two days ago, I'm just going to go forward today with that top-dressing. Had lots of surface roots, likely looking for more medium and beneficial to help their growth.
3) Not sure how much to chop off, but will try to save the healthier growth.
4) Plants aren't drinking, so, yes will top water lightly for next couple of weeks.
5) Will lower temps to 78 and rh to 60-65%rh.

I've added beneficial nematodes twice since transplant as I've had some fungus gnats, but I don't see too many fliers at the moment.

Thanks again LewberDewber, hope to chat some more.
Bro, my first grow i had 3 150 watt hps flood lights from the Home depot and a small fan I had in storage. I never had anything to tell me the temp or rh and all i used was miracle grow!
Till this date that was the best weed I've ever smoked and I've been smoking for 35 years.
All this crazy shit is for these supply houses to sell you all this equipment, nothing more!
 
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