I’m wit @Skydiver your plants are beautiful my friend, just spent leaves 
. No need to worry 
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Thanks @Mrcrabs and @Skydiver! I figured it was likely an occams razor situation. Funny how different the plants came out:
one is about half the height of the tallest
two are a more light green against the other 5 which are very dark, hunter green
a couple have had intermittent but consistent issues from the start which I now think are just genetic characteristics, whereas the rest have been hearty and resistant to nutrient burn or watering irregularities
a couple have, relative to the others, brittle branch/node architectures while the others are almost rubber-like in their resilience
some smell very citrus-like while others are skunkier
hope I can make a few beans from some of the consistently stronger plants so I can try again and see what is expressed in the next batch.
anyways - just nerding out a little bit.
thanks for reading!
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I got bad news for you all @growtus @Skydiver and @Mrcrabs,
His plants are just starting into flower so the yellowing isn;t from that yet. He state he is using super soil and may have mixed to much or to little of something and that something is:>>>.
Here is a pic of what i’m talking about, below the pic is what you do.
Calcium Deficiency
by Nebula Haze & Sirius Fourside
Cannabis calcium deficiency - leaf closeup
Problem: Calcium is an important nutrient which helps provide structure to the cannabis plant and helps it withstand stress like from heat.
A cannabis calcium deficiency can sometimes be difficult to diagnose since calcium deficiencies are often accompanied by magnesium, iron, and/or other cannabis deficiencies.
Learn more about the relationship between calcium and other cannabis nutrient deficiencies
Calcium moves relatively slowly through the plant (it is a semi-mobile nutrient), which means it tends to “stay put” after it’s been given to a leaf. It tends to show up on leaves that are actively growing and getting some amount of light.
Calcium deficiencies most often show up in the following places:
Newer growth (upper leaves)
Parts of fan leaves that have been exposed to the light
Found near the top of the plant under the light
Picture of a calcium deficiency on a cannabis leaf - white background so you can clearly see the brown spots - calcium deficiencies appear on the upper leaves (new growth)
This lower fan leaf is mostly in the shade, but the calcium defciency appears near the edges that are getting light. Calcium deficiencies often show up on parts of the leaf that are still actively growing.
A calcium deficiency can appear on new growth as well as the actively growing part of a cannabis leaf like this lower fan leaf
Calcium Deficiencies Appear on New or Actively Growing Leaves
Calcium deficiencies tend to appear on newer or growing leaves, which means calcium deficiencies first appear on leaves where there’s rapid vegetative growth.
Some of the most noticeable signs of a calcium deficiency will appear on newer or growing leaves which may display:
Dead spots
Crinkling
Spotting / Mottling
Small brown spots
Stunted growth
Small or distorted new leaves
Curled tips
Leaf die-off
Affected leaves may appear dark green besides the spots
Here’s a close-up of a calcium deficiency that appeared on leaves towards the top of a cannabis plant grown in coco coir:
Marijuana Calcium Deficiency - Closeup of brown spots which first appear on young (upper) leaves
Other Symptoms of Calcium Cannabis Deficiency
If a cannabis plant is affected by a calcium deficiency for too long, it may begin to show the following symptoms due to the lack of calcium.
Stems become weak or flimsy and may crack easily
Stems become hollow or show inner signs of decay
Plant does not stand up well to heat
Flowers/buds do not develop fully, or development is slow
Roots appear weak or under-developed
In severe calcium deficiencies, parts of roots may even die off or turn brown
Roots are more susceptible to root problems like slimy root rot
Cannabis tends to like high levels of calcium, so it is unusual to feed too much calcium when using normal amounts of nutrients and/or regular soil. There are not many known cases of cannabis calcium toxicity (too much calcium), however too much calcium can cause the plant to lock out other nutrients, so it’s important not to go overboard…
Calcium deficiencies are more likely to appear when…
Grower is using filtered or reverse osmisis (RO) water to feed plants – the amount of calcium found in tap water varies, but some tap water has enough calcium to prevent calcium deficiencies
Growing cannabis in hydroponics with nutrients that don’t supplement calcium or when growing in water that has less than 6.2 pH
Growing cannabis in coco coir that hasn’t been supplemented with calcium or below 6.2 pH
When growing in soil or soilless growing medium that hasn’t been supplemented with calcium (usually from dolomite lime) or is acidic (below 6.2 pH)
Too much potassium can also sometimes cause the appearance of a calcium deficiency
Outdoors – calcium deficiency is more likely to appear in acidic soil (below 6.2 pH)
Cannabis Calcium Deficiency - Brown spots on young (upper) leaves
Different strains of cannabis tend to have different nutrient problems. Some cannabis strains (or even specific plants) tend to use much higher levels of calcium than others, and so you may see calcium deficiency problems with one plant even when all the other plants (which are getting the same nutrients and environment) aren’t showing any signs of deficiency.
Solution For Calcium Deficiency in Cannabis
Your cannabis plant may show signs of a calcium deficiency if the pH at the roots is too high or too low. That is because when the pH of your root zone is off, your cannabis cannot properly absorb calcium through its roots. Therefore the first step is to ensure that you have the correct pH for your growth medium. Learn more about pH and cannabis.
Please note: After a calcium deficiency is cleared up, the problem (brown spots and unhealthy new leaves) will stop appearing on new growth, usually within a week. Please note that leaves which have been damaged by a calcium deficiency will probably not recover or turn green, so you want to pay attention to new growth for signs of recovery.
In soil, calcium is best absorbed by the roots in the 6.2 – 7.0 pH range (in soil, it’s generally recommended to keep the pH between 6.0 – 7.0, but calcium specifically tends to be best absorbed above 6.2)
In hydro, calcium is best absorbed by the roots in the 6.2 – 6.5 pH range (in hydro, it’s generally recommended to keep the pH between 5.5 – 6.5, but calcium specifically tends to be best absorbed above 6.2)
If you suspect your growing cannabis plant has a calcium deficiency, flush your system with clean, pH’d water that contains a regular dose of cannabis-friendly nutrients that includes calcium. This will remove any nutrient salts that may be affected the uptake of calcium and help restore pH to the proper levels…
To supplement with extra Calcium… (it’s very rare to give a cannabis plant too much calcium, however, too much calcium can lock out other nutrients so don’t go overboard)
Calcium, magnesium, and iron deficiencies often appear together in cannabis. Many growers decide to purchase some sort of Calcium-Magnesium (often called Cal-Mag) supplement for their grow room in case this common deficiency appears.
Listed below are common cannabis Calcium supplements, along below with some general information about each one. After supplementing with Cal Mag and correcting the pH, you should expect to see new healthy growth within a week. Remember, the old leaves will probably not recover, but new growth should be green and healthy.
Cal-Mag is Well Suited For Hydro, Coco Coir, or Soil
Botanicare Cal-Mag Plus is a calcium, magnesium, and iron plant nutrient supplement. General application is to mix 1 tsp (5ml) of Cal-Mag into each gallon of water. I have used Cal-Mag Plus several times with great results.
Guaranteed Analysis: Nitrogen (N) 2.0%, Calcium (Ca) 3.2%, Magnesium (Mg) 1.2%, Iron (Fe) 0.1%
Derived from: Calcium Nitrate, Magnesium Nitrate, Iron EDTA
Dolomite Lime – For Soil Growers (Organic)
If you’re looking for a way to supplement calcium in your organic or soil setup, I highly recommend a product called “Dolomite Lime.”
Dolomite is a good source of calcium and magnesium and can be mixed with your soil. The great thing about dolomite is it works slowly over the course of a few months.
Dolomite has a neutral pH of about 7.0 and will help keep soil at the correct neutral pH range which is optimum for cannabis growth.
You can buy Dolomite Lime online, but with shipping it’s almost always waaaay cheaper to pick up a bag at a home improvement or gardening store such as Lowes, Home Depot, gardening centers, etc. If possible, try to get a finer grade of dolomite compared to something that is more coarse.
How to Use Dolomite Lime for Cannabis: When growing cannabis indoors, add 6-7 teaspoons of fine dolomite lime to each gallon’s worth of soil. So if you’re mixing enough soil to fill a 5 gallon container, you want to add 30-35 teaspoons (about 2/3 cup) of dolomite lime to the mix. Mix the dolomite lime and the dry soil thoroughly, then lightly water it with water that has been pH’ed to 6.5. After getting the soil wet, mix the soil well and wait a day or two to let the soil settle before checking the pH and adding plants. When growing in an outdoor garden, follow the dolomite lime manufacturers instructions.
If you cannot get rid of your calcium deficiency, please consult our 7-Step Cure to 99% of Cannabis Growing Problems
Leaf Color
Brown or Dark Spots
Mottling / Mosaic Pattern
Leaf Symptoms
Abnormal Growth
Leaf Edges Appear Burnt
Leaf Tips Appear Burnt
Leaf Tips Die
Mottling / Mosaic
Slow Growth
Spots
Twisted Growth
Upper Leaves / Newer Growth Affected
Yellowing Between Veins
Other Symptoms
Buds Not Fattening
Plant Symptoms
Slow Growth
Twisted Growth
Weak Stems
Root Symptoms
Brown
Slow Growing
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@garrigan62 thanks buddy, hE said it was at the bottom older grow, and rootbound, that why i assumed it was just older leaves being spent, no biggy in my opinion, but I trust your guidance thanks again buddy
I add insects frass once a month that is high in calcium and have bone char, way at the bottom of my holes that is added calcium for my plants when they come into flowering, and grow in. 90-100 plus degrees weather , without negativity effects, I will see a leaf of two from time to time with these symptoms way at bottom but no spreading upwards @garrigan62 thanks again, pal
Interesting.
I’m not seeing much of what constitutes ca deficiency, and nothing like this in newer growth, but I am open to opinion! And I have a huge bag of dolomite as well as some homemade calcium acetate from egg shells and vinegar, which I’m less inclined to use due to pH.
I’ll inspect more closely today and consider my options.
Thanks for all your opinions @Mrcrabs and @garrigan62
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Couple weeks later and they are still getting bigger. The “runt” is now officially the biggest at around 7 ft. You can really see the variances across the strain in color, size and density. It’s really interesting. I have been giving small feedings of calcium acetate to the two lighter green girls to see if they darken up and the results are not quite conclusive yet but they do look a bit better. Everyone is stretching hard right now.
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Stretch and some early flowering
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And my shrimpy male, chopped back to a 10th of his former glory…watching his sisters blossom and tower over him
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Beasts! The color variations are always cool to see. My Afghani plants were so dark green they were almost blue.
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The stretch is over and now I’ve got budlets! The smell is great! I have a feeling it’s gonna get stinky out here.
I moved the male into the basement since it’s starting to really bud out as well.
Gonna make some worm tea this weekend for a nice boost. Will add ca and mg as well.
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Your which 2 Bales comment really got me giggling this morning bro. I needed it more than I’ll say. Your plants are full and gorgeous. Also, hello from a Louisiana boy lol. I’m grem 
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Cheers @Gremmall
Louisiana boy? This Georgia boy won’t hold that against you 
Update
Buds are stackin up now. Smell is interesting. Skunky with a hint of licorice
Hit a couple plants with some ff trio because I was seeing some premature yellowing and they have recovered nicely. I think I’ve got about 3-4 weeks left but I’m absolutely in the dark about how long these will take. Hopefully not too far into the rainy days
Also harvested pollen from my male and will paint some on this weekend.
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Looking on point!
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Beautiful, buds stacking nicely!!
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Well, i may have waited too late to do this, but live and learn… Maybe get a lil lucky on the way.
Each plant had a branch tagged and pollinated, and each got a fresh journal entry for informational posterity. So when the seeds come off ( if I get any), I’ll know who was who and what’s what.
The weather has turned and this week may change things. I’ve got greenhouse plastic en route to make a lean-to for the coming showers.
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Just beautiful,
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never too late, just leave those branches on after harvest to fully ripen. It takes 4-8 weeks.
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