Grasscity - Dab Rig Sale - 50% Discount

Cal mag deficiency?

Discussion in 'First Time Marijuana Growers' started by els1989, Sep 6, 2023.

  1. What do you guys think this is…. 7A6A6FC4-CEC4-4133-AE2C-017B2A0A2F55.jpeg
     
    • Like Like x 1
  2. Recent transplant? I have one that is smaller but has similar discoloration. Most of the advice given was due to transplant shock, but I'm a beginner so don't take my word for it.
     
  3. is it an auto or photoperiod?
     
  4. Photoperiod
     
  5. Forget about transplant shock, unless it was repoted in the shittiest soil with uncontrolled pH and sodium. (even then real cause would be lockout)
    I see why sosogrow took the time to ask if it was an auto, very nice pre-flower showing sexual maturity. Hope your light schedule provide at last 18 hrs of day light. Or have you fliped?
    Anyway, yes, nutrient issues. What is your soil made off or what brand is it? What nutrients have you been giving so far? What are you ppm and pH runoff numbers?
     
  6. Simply put, lay off the nutes for a week or 2 and see if it bounces back.
     
  7. This is a very nice answer I'd like to discuss with you! I have learned a lot here and keep learning as I read and discuss with other growers. My opinion was toward deficiencies, maybe worsen by over watering, or pH issues, not in the overfeeding zone from my opinion. But I am not saying I own the truth! I just don't see dark green, burn tips or clawing. What would make you go for excess feeding?
     
    • Agree Agree x 1
  8. Sorry, brother. I meant no disrespect. When I see outer leaf discoloration, I immediately go to nute burn. For some reason, some new growers tend to overfeed or overmix when feeding. Mix ONLY AS DIRECTED and once a week should be fine. I'm an outdoor grower and a novice at best, so I don't really pay attention to the ph or ppm. If I see something wrong, I address it and move on.
    I live in an area where it gets HOT. I water them daily, usually 1/2 to 1 full gallon depending on the heat. I feed every Friday morning, I treat them with Neem oil every Monday for aphids, hoppers, etc. and I spray my plants with BT every Thursday for caterpillar control. Rarely do I see discoloration of the leaves at any time during the process and I must say I'm usually pretty happy with the end result. Peace :)
     
    • Like Like x 1
    • Agree Agree x 1
    • Friendly Friendly x 1
  9. Original post was transplant shock, in there I discuss the soil ph was at 6.5 I have ro system that produces 0ppm 0ec water. The soil is ffof straight from the bag. I did water with a big bloom water mixture on initial transplant and some of the foliage did get some of the fertilized water over it not knowing that was a no no during light time. 18/6 light schedule 76 degrees 78-82% humidity to keep the vpd down between .53-.73kpa… I also have been reading through jorge Cervantes cannabis encyclopedia as I go.
     
  10. I started in coco so I had been feeding ff big bloom then when I transplanted I into ffof I’m honestly not sure wtf is wrong with it someone mentioned nuts burn cause ffof has been known to be hot. I did a multi gallon fresh reverse osmosis water flush and the ppm was at 2000 at the beginning and as the final water was draining it had dropped down around 1300 ppm… if over watering was the problem wouldn’t my fan leaves be more droopy?
     
    • Like Like x 1
  11. Ive been experiencing this happening to me a lot over the last year and every time it has been underfeeding calmag I am in no ways a pro gardener but it has certainly fixed my issues just wished I done it earlier

    Sent from my VOG-L09 using Tapatalk
     
  12. #12 Laucass83, Sep 7, 2023
    Last edited: Sep 7, 2023
    OK. Very valuable info here. It was easy for me to zoom in your original pic and see your medium was soil, not coco. But last thing I expected was that the plant was transplanted from coco to FFOF. Now we can talk about transplant issues, pH issues and macro nutrients issues.
    As coco is considered Hydro culture, the optimal pH would be in the range of 5.8. Now in soil optimal pH should be around 7. Note that the pH scale is logarithmic, meaning that 0.1 difference means 10X more acidic or more basic, so yeah, big big difference between coco and soil. If you have to do this again, from coco to soil, next time gently shake off the roots and remove as much coco as possible. You can also bring your plant outside, remove from container, and gently rinse off the roots with a garden hose to remove the coco. All this put together, your root zone ATM requires different pH level and you might have to deal with pH issues for a few weeks.
    2.jpeg
    About high ppm in FFOF, starting in coco, and flushing using RO water. People would add perlite to dilute FFOF, best way to keep the integrity of the mix. When flushing soil don't forget you are not only removing the sky rocking N-P-K value, but you are also stripping very important macro nutrients values like Calcium, Magnesium, Iron, Manganese, Molibdenum, Copper, Bore, and a few other ones. And when you are using RO water, you are using water without any of these minerals that are naturally found in tap, rain or river water. And when you grow in coco, coco needs to be buffered with extra Calcium and Magnesium as well. All this put together, your overall ppm might still be high, but you could be facing real Macro nutrient deficiencies. If you are going to use RO water, you need to supplement with macro nutrients. Check your local hydro store, get macro nutrients supplement.
    You are right about plant being more droopy if recently over watered, but as I was exploring possibilities, plant is a tad droopy on original pic, soil looks wet, and you have unknown issues that worth asking! Your plant could have been over watered for first weeks, with recent water schedule modifications resulting in what we see. Knowing that the plant was flushed recently, lack of oxygene in the root zone could also amplify nutrients issues. This is true. Over-Watering Cannabis Plants - Symptoms & Solutions.
     
  13. I pulled out the soil test kit today, tested 2 spots for ph with 2 different results, test for phosphorus showed sufficient, test for nitrogen produced 0 color at all from 2 tests. Not really sure how to proceed other than to let the soil dry and guess. Last watering was Sunday and they are still pretty damp being kept at 80% humidity
     
    • Like Like x 1
  14. Today 62F6E5BE-9E92-42F9-B3E1-1B155F31074E.jpeg
    A712DF1F-90E9-41A6-A9DC-C851A0103F79.jpeg
     
    • Like Like x 2
  15. It's not a catastrophe. Plant will live. Ever heard the expression «it takes a village to raise a kid?» Maybe someone here had to deal with the same situation you are in, and can join in to help.. I have never used the Fox Farm products.
    What I would do, I'd wait 2-3 weeks for situation to stabilise before flipping. If plants gets too tall to your liking, some pruning can be done. As you'll water, pH should stabilise in the root zone, roots will also expend from the coco to the richer soil.
    Then, continuing with RO, I would definitely bring in and add trace minerals aka macro nutrients. At the moment, plant don't need the Big Bloom, they would benefit of Grow Big if your soil is depleted from N.
    Saying «Not really sure how to proceed other than to let the soil dry and guess» is right! Feed at very first sign of a deficiency if pH is OK. Welcome to organic growing! I grow in living soil, and with experience, I can expect and anticipate the best time to top dress (using dry amendments like bone meal, kelp meal...). Your advantage is that your nutrients being water soluble, it will be quicker to correct a deficiency than with amendments.
     
  16. I have been planning to top the plant really want this issue to stabilize before I do so. This Friday makes 2 weeks since transplant and the way the yellowing is moving up it has to be deficient in nutrients. This little guy is trying to play catch up as well which is another reason I am planning on topping the amnesia strain. I feel like I should have already been training this plant but as soon as I started to see these issues arise I’ve been hyper focus on trying to figure out wtf is going on with it… I think I might bring in a hydroponic expert that lives a few miles away to see what he thinks. I do have a trellis net to force the plants to bush outwards and fill the canopy before I flip to flower. I also installed my inline fan and carbon filter outside of the tent to prevent restricting my growth height. 900D0D0A-C973-4DAC-B13A-E7552119E5A6.jpeg DDD29FA8-DF29-4937-B6A4-8EA59A9CBEA0.jpeg
     
    • Like Like x 1
  17. Nice setup! I feel for you with all the stress, putting efforts and money to fix this, without getting expected results. Hang on!
    The blue cookie is still in coco, right? Clearly, here, plant is hungry for some *grow* formula, rich in N. This will help with growth and fix it's colour. I don't see any Cal mag issue with her.
    I just found back your last thread and, ouch, what a difference since Sunday and today's earlier pics. What I'd like to point out kindly, is that new growth is strong and healthy. At the same time, we can see on today's earlier plant pics, that the parts of the leaves that remains in the shade looks fine. Damages on fan leaves are where they are exposed to light. Can it be light burn? What is your light again? What height? Did a little research to support mt hypothesis of light burn. Check this page, #2 light burn, What Causes Brown Spots on Cannabis Leaves? | Grow Weed Easy . Looks like your situation a bit here..
    cannabis-led-light-burn-brown-spots-leaves.jpg
     
    • Like Like x 1
  18. I’ll check my light height I did have it set for 3ft to canopy at 100%. I adjusted it at transplant but I know it’s grown a bit since and have not adjusted light height to accommodate new growth yet.
     
    • Like Like x 1
  19. How are they today? Any improvement? Is your light the S22, maybe this is your kit? Advance Grow Tent System Compact 2x2, 1-Plant Kit, WiFi-Integrated Controls to Automate Ventilation, Circulation, Full Spectrum LED Grow Light
    Went back to your older threads, you say you are foliar feeding. Always spray before lights out.

    Since your grow is full organic, can I advise you kindly to post a new thread with today's plant pics in the Organic section? Lots of very talented growers there who knows their stuff and like to help. Calling help! Organic sinse, ElRanchoDeluxe, TimJ !!
     

Share This Page