Guide to Nutrient Deficiency or Toxicity

yumyumyuh said:
Very helpful feed. So I am 99% sure I have a calcium problem. My leaves look almost identical to the bottom photo under calcium. Whether its an abundance or deficiency, I am not sure. My plants are well into the flowering stage and Ive been giving them steady pottash fert. Which makes me believe it might be a calcium deficiency. However I had used organic soil with hummus in it which is stated in calcium abundance. But my real question is, How do I fix a calcium deficiency? And if its an abundance..how do I correct it?
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calcium deficiency youd add bonemeal to the soil... hard to do with plants already in there. ive heard crushed eggshells, and ive heard 1teaspoon milk / liter of water. no idea if any of these work, i havent had this problem before.
Abundances can be treated by flushing (if severe) or they will correct themselves over time by just watering and making sure your not adding more of that chem/element in.
 
Ive looked through all defs on here and cant find any that resemble mine,a black spot appears then the next day it turns brown then gets bigger and eventually it drys and the leaf is damaged to much,the plant is only 17 days old and the rest are fine,sorry dont have no pics but help and possible info would be appreciated,thanks?????
 
spoad said:
Ive looked through all defs on here and cant find any that resemble mine,a black spot appears then the next day it turns brown then gets bigger and eventually it drys and the leaf is damaged to much,the plant is only 17 days old and the rest are fine,sorry dont have no pics but help and possible info would be appreciated,thanks?????
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ummmmmm yea a pic is the best way to know man. a lot can start as a dot that gets bigger and badder. is this happening on all the leaves? just one? where did the dot of death start? middle of leaf? tips? what color are the leaves? are they a nice rich green from top of plant to bottom? theres a lot of factors to take into account when something goes wrong.
 
what does it mean if all of the leaves are light green in color? they also have burnt edges and tips. I have done some research but cant quite identify
 
Hey there,
First off thanks for writing this up it helped alot.
and second im pretty sure this is magnesium deficiency but id really like a second opinion
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WHAT! You telling me I'm not a GOD ;)

This is a great explanation, thanks for the knowledge. I loved the turd part, I was in absorb mode then, BAM!

Happy Holidays :peace:
 
mcgyversmoke said:
Hey there,
First off thanks for writing this up it helped alot.
and second im pretty sure this is magnesium deficiency but id really like a second opinion
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Looks more like a calcium deficiency too me. Looks to be up in the newer growth. Calcium is immobile. Magnesium is mobile and deficiencies usually presents in older growth as the plant moves the magnesium where it needs it, for new growth...
 
so if its calcium how do i treat for it? cuz it is pretty much only on the newer leaves.
I've been using water out of our tap because its pretty damn good here and when you add the sensi bloom it goes down to 6.5 ph.
I'm very worried and not sure how they are gunna come out of it. they seem to be getting worse and worse, although still growing well and putting out alot of crystals.
 
mcgyversmoke said:
so if its calcium how do i treat for it? cuz it is pretty much only on the newer leaves.
I've been using water out of our tap because its pretty damn good here and when you add the sensi bloom it goes down to 6.5 ph.
I'm very worried and not sure how they are gunna come out of it. they seem to be getting worse and worse, although still growing well and putting out alot of crystals.
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I am not familiar with sensi bloom and its contents. But if its like most AN products it is not complete so a calcium additive is probably needed, even with your tap water. CalMag or the like will work fine. On an outside notion does your tap water pass through a water softener? If so you coud have excess sodium build up in your medium. And this would be an actual case of lock up, not just a simple deficiency.....
 
watchhowIdoit said:
I am not familiar with sensi bloom and its contents. But if its like most AN products it is not complete so a calcium additive is probably needed, even with your tap water. CalMag or the like will work fine. On an outside notion does your tap water pass through a water softener? If so you coud have excess sodium build up in your medium. And this would be an actual case of lock up, not just a simple deficiency.....
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i dont believe it does, ive never heard of anyone using a softner up here. im going to go pick up some cal/mag and see how that helps. im supposed to do a normal water watering today, should i just do straight water with cal/mag? i know its not a lockout because i already had the issue early in my grow when i wasnt ph'ing my water. then i flushed with 6.5 water heavy for a weeek now they are back on a regular cycle of feeding.
I appreciate the help watch.
 
unclebobbyb said:
WHAT! You telling me I'm not a GOD ;)

This is a great explanation, thanks for the knowledge. I loved the turd part, I was in absorb mode then, BAM!

Happy Holidays :peace:
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haha yea, that was seriously a post on here. and if i recall correctly, there was a few pages on it and why its a bad idea.
 
nick17gar said:
these should help too:

View attachment 1894317View attachment 1894318
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Nice thread this is! I dont understant why hydro should be different than soil, but also Im going to be growing in coco which has no nutrients in it, so I assume this means I should be using Hydro nutes? does this mean I should follow that chart with a Ph of 5.8 even though I will be watering myself as you would with soil? maybe a medium somewhere in between?
 
Thedillestpickle said:
Nice thread this is! I dont understant why hydro should be different than soil, but also Im going to be growing in coco which has no nutrients in it, so I assume this means I should be using Hydro nutes? does this mean I should follow that chart with a Ph of 5.8 even though I will be watering myself as you would with soil? maybe a medium somewhere in between?
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you are correct treat coco like hydro for ph.
 
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