Discoloring of random leaves
- Thread starter SkEE87
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calvin.m16
Well-Known Member
Magnesium deficiency, interveinal necrosis is what it's called. Basically yellowing leaves in between the veins.
Solution: 1 gram Epsom Salts per/gallon of feed water once per week or so. Stop cutting your leaves off that is just stressing the plant more, if the leaf is distressed badly and you don't like looking at it just pluck the whole thing off until your solution is found.
It will take a few days for the epsom salts to start greening up leaves and solving the magnesium deficiency. That type of leaf damage can also be caused by light or heat stress too, especially when its showing up on the upper part of the plant more than the lower. Heat stress will cause the leaves to "taco" though, I just see mag deficiency.
Solution: 1 gram Epsom Salts per/gallon of feed water once per week or so. Stop cutting your leaves off that is just stressing the plant more, if the leaf is distressed badly and you don't like looking at it just pluck the whole thing off until your solution is found.
It will take a few days for the epsom salts to start greening up leaves and solving the magnesium deficiency. That type of leaf damage can also be caused by light or heat stress too, especially when its showing up on the upper part of the plant more than the lower. Heat stress will cause the leaves to "taco" though, I just see mag deficiency.
Calcium deficiency displays as necrotic spotting on leaves, a rusty spotted look, this is definitely magnesium deficiency and not Calcium. For magnesium deficiency you would use epsom salts (magnesium sulfate) not Calcium Magnesium solution.
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Mericat
Member
I'm sure you're right with the Mg deficiency. It looks like the yellowing is just on the oldest leaves. Maybe he gave them a hot mixture, watered with low pH water, or had dry spots awhile ago. I don't know. It was just a though. I still haven't gotten my Master Grower Card.
calvin.m16
Well-Known Member
Calcium Deficiency
Magnesium Deficiency
Magnesium Deficiency
calvin.m16
Well-Known Member
For all I know the plant got way too hot or light was too close and cooked those leaf margins and its not magnesium deficiency. I'm not trying to correct you caues in your case "calmag" suggestion would have worked due to magnesium content, but the addition of calcium wouldn't be neccesary also you can fix these problems a lot cheaper using epsom salts, $18 will buy you enough to treat 8,100 gallons of water @ 1g/gal and you would only use that treatment once a week or so, so for my scale grow (30 gallons per/day) that would cost me $0.42 per week where with calmag it would cost me $23/week (~$1.00/month vs ~$90/month)I'm sure you're right with the Mg deficiency. It looks like the yellowing is just on the oldest leaves. Maybe he gave them a hot mixture, watered with low pH water, or had dry spots awhile ago. I don't know. It was just a though. I still haven't gotten my Master Grower Card.
~$0.002 per/gal using Epsom Salts for mag deficiency
~$0.11 per/gal using CalMag product for mag deficiency
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Mericat
Member
Hey Calvin. I think you are mistaking me for Cpappa maybe. I'm totally with you on this one. Mg and Ca deficiency looks way different and can actually lock each other out. I almost said something but didn't. All I was saying is I totally believe you're 100% correct with the Mg deficiency. But the newer growth looks decent so I was just thinking it might have been something he did in the past.
I've seen your plants so I know you know your shit, and am just trying to ask for your input on my theory. I'm still a rookie, so I was basically just trying to get your input. That was a lot of typing so I need to smoke another bowl.
Modern Selections
Well-Known Member
I agree Mag issue. The plant is also starving.
Epsom salt as stated above, foliar fed for faster results and then water in a good feeding with a good base mix. Make sure to adjust pH accordingly after mixing your base nutrients in, as that is most likely how the plant got there to begin with.
Epsom salt as stated above, foliar fed for faster results and then water in a good feeding with a good base mix. Make sure to adjust pH accordingly after mixing your base nutrients in, as that is most likely how the plant got there to begin with.
MintyDreadlocks
Well-Known Member
Plants have seen some better days. 
lol i cut the top fan leaves like that so i can get the plant to grow the way i want it to. I cut the leaves so light can shine through better&the branches grow at the same rate. Kinda building the base of the plant on the smaller one
I cut some of the fan leaves on the plant thats on the left so i get better light. I wanted all the branches to grow at the same rate bc i am about to top the branches so it splits into two. When Im ready to switch it to flowering the plant will be at the size best to maximize my light.
I water the plants everyday til theres a runoff&I empty that. I give nutrients 1-2 times a week. I use Maxi Gro now&Maxibloom for flowering. Its supposed to have all the stuff needed. Its just a powder instead of the liquid i have used before.A pretty simple method.Once or Twice a week I give it about 750-800 ppm on my EC meter,6.5 ph. I give regular water at 6-6.5 other days.
I had initially thought it was a light issue. The light may have been a little low. The only thing I dont understand about that is if it was light i think the entire plant would look damaged. I think i have a CAL MG solution, i will try giving it a little bit of that. Most of the leaves look completely normal but some other ones have that bronzing look. I did have a problem very early on,.I waited too long to transplant and leaves started to get yellow bc of the roots having nowhere to go. That problem was very early on&the plant completely rebounded since then. Those marks showed up well after that issue.
I appreciate yall.
I water the plants everyday til theres a runoff&I empty that. I give nutrients 1-2 times a week. I use Maxi Gro now&Maxibloom for flowering. Its supposed to have all the stuff needed. Its just a powder instead of the liquid i have used before.A pretty simple method.Once or Twice a week I give it about 750-800 ppm on my EC meter,6.5 ph. I give regular water at 6-6.5 other days.
I had initially thought it was a light issue. The light may have been a little low. The only thing I dont understand about that is if it was light i think the entire plant would look damaged. I think i have a CAL MG solution, i will try giving it a little bit of that. Most of the leaves look completely normal but some other ones have that bronzing look. I did have a problem very early on,.I waited too long to transplant and leaves started to get yellow bc of the roots having nowhere to go. That problem was very early on&the plant completely rebounded since then. Those marks showed up well after that issue.
I appreciate yall.
Also,How often does everybody give their plants nutrients. I wanted to use as little nutrients as possible this time bc it seems i run into problems mid flower too often. Ive been growing for about 3-4 years. I have had many good plants,i had many bad plants. The last plants i had the quality of the high was great but the taste wasnt what i was looking for. A lot of times i grow great bud but I cant get the smell&taste out of the plant. When you break the pot up it smells amazing,very strong but when its just a bud you dont get that whif of excellence,lol. I know that great smell&taste is there but the smoke is sometimes harsh&doesnt match the smell of when its broken up. What do you very experienced growers do to dry out the pot&get it to that primo taste&smell?