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Calcium defficiency? How do I fix this? HELP!!

G

Guest

I'm working with 2 strains Soma NYCD and Nirvana White Widow...

They both get the same nutes (BC Boost + BC Grow 2:1) and I keep my PPM at around 600-650. PH between 5.5 and 6.2 (avg 5.9)

The problem is, the NYCD's look great... but the WW's look like there's a calcium issue... I have 2 tables so I just separated both strains NYCD on table 1 and WW on table 2. On 5th week of veg ready to flip at any moment

Check out the pic of an NYCD



Now a pic of the WW



You can see the spotting, etc... it looks like its only on the larger fan leafs but still.. I'd like to dial these guys in correctly before I begin to flower.

Anyone have experience with Nirvana WW? or have this type of issue where 1 strain is fine and 1 is having probs w/ the same conservative dose of nutes?

Help! :)
 

sproutco

Active member
Veteran
Your new growth is getting yellow it looks like. Stong contrast in green between the old and new growth. Are you getting white bleached areas on the leaves without burned margins or tips? I think I see one of your leaves looks like this. Are the leaves twisting 90 degrees like toward the ends? Seems like I can also see this. Zinc deficiency.
 
G

Guest

sproutco, thanks for checkin out my thread... you were just the guy i was lookin to hear from :)

the nycd's look just fine, no strange twisting or bleached areas... however new growth does seem a bit yellowish / light green, as the leafs get larger they get darker and look normal

as for the WW's their new growth is much lighter than the NYCD

I'm not sure what to do, earlier on (around week 3) i had PPM at about 850 and it burned some of the growth pretty bad, thats when i dropped it to 650 and things started to come in nicely

perhaps the spotting is just the old leafs that were effected during that time because the new growth doesn't look that bad BUT if you look close enough you can see some early signs aroudn the edges of something going on

i'm not sure what to do or how to correct this, I've got BC Boost, BC Grow & BC Bloom

Are my nutes too low? Too high? Bad mixture?

When the resevoir is low, I add R/O water and then add the 2:1 mixture again until PPM gets up high enough... is this bad?
 
G

Guest

I can always switch up nutes if you think thats a good idea, I'm open for any suggestions...

I'm eager to learn how to fine tune nutrients accordingly to meet each strains maximum potential... I realize what may be good for strain A may not be good for strain B
 
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G

Guest

Hey Sprout,

Yeah, on the WW's all of those issues are apparent... on the NYCDs it only looks like top growth is a pale green

Here are some close up shots of the WW issues

Bleaching


Calcium def?


Not sure


Twisting


I'm all ears bro :)
 
G

Guest

Hmm... could it be that its my R/O water and that the nutes I'm using are lacking somethings because they are formulated for tap water (with calcium and other dissolved solids)???
 

sproutco

Active member
Veteran
Could be that your temps are too cold or the roots are being restricted somehow like root bound. Too much phosphorus. Back to drinking. See you tomorrow. :friends:
 
G

Guest

Interesting, I do have these in 5.5" pots... when I pulled some males a few days ago there were roots everywhere in there... definitely looked way too packed

I don't think it would be a problem to switch em into net pots, i think I'll give that a shot to allow a bit more freedom to the roots... hopefully that helps!
 

Blackmelo

Active member
this is hydro isn't it?

4th time i have seen this in hydro now. Never in soil before...

hmm. I have narrowed it down to 4 culprits but I am still not too sure which one it is:

1. too much nitrogen, locking out calcium

2. too much ph down(phosphoric acid) beeing added, which adds alot of phosphorous

3. Water temperature too cold

4. Just a calcium deficiency.
 
G

Guest

Blackmelo said:
this is hydro isn't it?

4th time i have seen this in hydro now. Never in soil before...

hmm. I have narrowed it down to 4 culprits but I am still not too sure which one it is:

1. too much nitrogen, locking out calcium

2. too much ph down(phosphoric acid) beeing added, which adds alot of phosphorous

3. Water temperature too cold

4. Just a calcium deficiency.

Hey Melo,

yeah its hydro (ebb&flow)...

1. i mixed my nutes and kept things relatively conservative (650 PPM at 5th week of veg)... the NYCD's look great but the WW's are being picky

2. i do have to add a lil bit of ph down every day to keep PH steady between 5.5 and 6.5 (usuaally 5.9).. i dunno on that one

3. water temp couldn't be that cold... room temp is always about 75 not sure what the water is at though

4. probably... like sproutco said they might be rootbound and judging by the males i pulled they definitely are... so i'll be switching up into netpots tmorrow... also gonna talk w/ the guys at the shop about R/O water and calcium defs n see what they point me at

thanks for stopping by!
 

sproutco

Active member
Veteran
Overgrow cached page:

Zinc
A Zinc deficient plant is obvious from the wispy new growth with twisted leaflets at 90°. There is also intervenial chlorosis at the top of the plant that is commonly confused with an Iron deficiency

http://216.239.51.104/search?q=cach...q/1382+overgrow+zinc&hl=en&gl=us&ct=clnk&cd=2

Rather than guessing at the level of nutrients your adding: Here is a nutrient profile list for mj at different stages of growth. Along with it at the bottom of the page is a calculator. http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm You enter the net weight of the bottle, ml used, and % element like 5% calcium into it. It will give you the ppm's of each element like 200ppm nitrogen. Compare your rate to what is suggested for your stage of growth. This info may already be provided on the bottle or on their website without having to do the calculator thing.

Once you know exactly what your adding we can compare potassium to calcium to magenesium. It should be 4:2:1. If there is alot of potassium and magnesium and little calcium, then calcium def could be possible. If you figure out the ppms of your micros like zinc, we can look at the level and if its strong enough or compare using ratios to see if competition is occuring from other micros or even macro elements like magnesium.
 
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G

Guest

sproutco said:
Overgrow cached page:

http://216.239.51.104/search?q=cach...q/1382+overgrow+zinc&hl=en&gl=us&ct=clnk&cd=2

Rather than guessing at the level of nutrients your adding: Here is a nutrient profile list for mj at different stages of growth. Along with it at the bottom of the page is a calculator. http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm You enter the net weight of the bottle, ml used, and % element like 5% calcium into it. It will give you the ppm's of each element like 200ppm nitrogen. Compare your rate to what is suggested for your stage of growth. This info may already be provided on the bottle or on their website without having to do the calculator thing.

Once you know exactly what your adding we can compare potassium to calcium to magenesium. It should be 4:2:1. If there is alot of potassium and magnesium and little calcium, then calcium def could be possible. If you figure out the ppms of your micros like zinc, we can look at the level and if its strong enough or compare using ratios to see if competition is occuring from other micros or even macro elements like magnesium.

Okay, I tried to figure this out but I'm not sure if I'm correct...

Bottle info:
Net wt - Poids Net 1.15kg/2.53lb
1 litre / 33.33 fl.oz

Here's the boost table:

tableboost.gif


Here's the grow table:

tablegrow.gif


Using this calculator and 16 units per us gallon, I got these PPM numbers for the mix I was using (2 parts boost, 1 part grow):

Boost PPM:
Nitrogen: 146
Potassium: 81
Calcium: 156
Iron: 1.988

Grow PPM:
Nitrogen: 49
Phosphorus: 64
Potassium: 242
Magnesium: 54
Sulfur: 70
Boron: 0.578
Manganese: 2.085
Zinc: 0.97
Molybdenum: 0.019
Copper: 0.186

My mixture PPM (at 2:1):
Nitrogen: 341
Calcium 312
Iron: 3.976
Phosphorus: 64
Potassium: 242
Magnesium: 54
Sulfur: 70
Boron: 0.578
Manganese: 2.085
Zinc: 0.97
Molybdenum: 0.019
Copper: 0.186

looks like 242:312:54 (potassium:calcium:magnesium) unless i did this completely wrong... did I?
 
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sproutco

Active member
Veteran
I think you got the right answers for some. Check you totals like potassium. Your using 16 ml per gallon of water of grow and 32ml of boost. Right? Do both bottles weigh the same? I will enter everything in and check it for you once i get this info. Great job! :smile:
 
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G

Guest

sproutco said:
I think you got the right answers for some. Check you totals like k. Your using 16 ml per gallon of water as the dose. Do both bottles weigh the same? I will enter everything in and check it for you once i get this info. Great job! :smile:

Yeah, I checked out the bottles beforehand to make sure they had the same weight

I'll double check this once more, could just be this nute mix aint that great... I'm running low on both of these anyway so if I should grab something else better suited LMK :D
 
G

Guest

Shit you're right I made a mistake... it looks like

404:312:54 (potassium:calcium:magnesium)

so mag looks a lil low and calcium a bit higher than suggested, should be around 200ish calcium and 100ish mag I assume... what about this zinc issue? Is 1 PPM enough?
 
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sproutco

Active member
Veteran
32ml boost and 16ml grow per gallon of water? According to those numbers, this mix is off bad.
 
G

Guest

Oh hey sproutco, i just left the default 16 parts per gallon number in there so that I could find out if I met that 4:2:1 ratio.

I'm not sure exactly how many parts per gallon I use because I fill the res (about 15 gals) and just add a 2:1 mixture until my PPMs hit the 650 range

i obviously have room for improvement with my technique :D
 
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sproutco

Active member
Veteran
Sometimes instead of 4:2:1 you might see Potassium to calcium 1.5:1 instead of 2:1. This might be good for tomato fruit. LOL. You could also see 3-4:1 calcium to magnesium instead of 2:1 If you were concerned about calcium being absorbed enough with like low transpiration, developing fruit, etc...

Interestingly, your fert has a high level of zinc compared to copper = copper deficiency possible. Might need to be adding epsom salts for more magnesium with a high level of calcium and potassium present.
 
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