Skywalker Kush Problems

[Clix]

btw if youre worried bout the chemical/idustrial calmags why not get yourself some dolomite lime and do it the organic way??? surely this wot fuck up any other levels as its not so concentrated like coming out of the bottle.

I had issues with lime raising my ph in the coco to crazy levels then its almost impossible to get it back down again. Coco is kinda a dick like that lol At least my experience has been so far.

 

[medic grower]

Oh well im growing on coco since ages if you once have dialed everything in its pretty simple. the problem is adding to much stuff isnt good for coco. I use cal (mag is in my all in one fert which runs excellent for coco) only a shot here and there and never had a defiancy with that. I also use citrus acid instead of any chemical ph downers this buffers a lot in coco. also for the watering run 10% of the size your pot has.If your pod is 11 liter for example run 1.1 liter thru the pot and youll be fine with waterig again in 48 hrs. never had issues running with that cycle.

 

[Thefarmer1]

I use the CaliMagic and I've never had much issue with Nitrogen overload. I think it's something like 1-0-0 so there shouldn't be enough to do any damage. I'm in hydro technically but it shouldn't be an issue either way.

Poster before me said it best, make sure not to over care! Find a good nute regimen and don't sweat the small stuff. As long as your plant still looks like those pics you're alright!

 

[Waira]

Clix- the carbonates (CO3--) aren't involved with anything but pH buffering in solution, the plant doesn't use this anion; true, too much N and Mg can interfere with P uptake, but the levels would have to be really high, exactly how high, IDK,... I see zero P defc, symptoms, in any case,... Mg defc. will affect lower leaves first, not uppers,.... looking at your pics in Weds. post, I can't see Ca defc. symptoms, though i do see some of the pale patches,... early symptoms can overlap with severeal other things, so I can't make a call yet, unless you have fresh pics of affected leaves,... post some please, and look at Ca defc. symptoms here, and see if it looks similar,-- https://www.autoflower.org/index.ph...irty-deficiency-picture-depot-expanded.43164/
.... another possible defc. hitting leaves up that high is Zn, which is also an immobile nute, so look that up as well,...
...watering with pure RO/DI water is okay, but you'll need Ca-Mg every time when doing it,... this water is stripped of everythuing, including the buffering Ca/Mg carbonates; without any hardness to the water (like tap has), even small input will cause wild pH swings, making the pH very unstable,... so, many folks blend their RO/DI water with dechlorinated tap,... something around 150ppm is good, still fairly soft, but has sufficient buffering capacity to make stable solutions,...
..dolomite lime (and the others, Ag and oyster too-?) won't force the pH above 7.0, but lots of it will have powerful buffering effects, making it difficult to make acidic soln.'s,.... dolomite is very slow acting too, BTW, compared to Ag and oyster shell,... it's slightly chemically different, still a Ca/Mg carbonate, but bonded differently,... as such it's better for long term pH buffering and slow nutrient release,... Ca-Phosphate is variable in solubility, depending on temp., and the form it is in,... the curling sure looks like the overwtaering type, not N-tox, and you say that's corrected now, right? ... Aaaand of course, pH affects all of this directly,.. what pH are you reading, and what method are you using to measure it? Coco like to be in the low 6's, according to most coco-nuts,...

 

[Clix]

Clix- the carbonates (CO3--) aren't involved with anything but pH buffering in solution, the plant doesn't use this anion; true, too much N and Mg can interfere with P uptake, but the levels would have to be really high, exactly how high, IDK,... I see zero P defc, symptoms, in any case,... Mg defc. will affect lower leaves first, not uppers,.... looking at your pics in Weds. post, I can't see Ca defc. symptoms, though i do see some of the pale patches,... early symptoms can overlap with severeal other things, so I can't make a call yet, unless you have fresh pics of affected leaves,... post some please, and look at Ca defc. symptoms here, and see if it looks similar,-- https://www.autoflower.org/index.ph...irty-deficiency-picture-depot-expanded.43164/
.... another possible defc. hitting leaves up that high is Zn, which is also an immobile nute, so look that up as well,...
...watering with pure RO/DI water is okay, but you'll need Ca-Mg every time when doing it,... this water is stripped of everythuing, including the buffering Ca/Mg carbonates; without any hardness to the water (like tap has), even small input will cause wild pH swings, making the pH very unstable,... so, many folks blend their RO/DI water with dechlorinated tap,... something around 150ppm is good, still fairly soft, but has sufficient buffering capacity to make stable solutions,...
..dolomite lime (and the others, Ag and oyster too-?) won't force the pH above 7.0, but lots of it will have powerful buffering effects, making it difficult to make acidic soln.'s,.... dolomite is very slow acting too, BTW, compared to Ag and oyster shell,... it's slightly chemically different, still a Ca/Mg carbonate, but bonded differently,... as such it's better for long term pH buffering and slow nutrient release,... Ca-Phosphate is variable in solubility, depending on temp., and the form it is in,... the curling sure looks like the overwtaering type, not N-tox, and you say that's corrected now, right? ... Aaaand of course, pH affects all of this directly,.. what pH are you reading, and what method are you using to measure it? Coco like to be in the low 6's, according to most coco-nuts,...

This where I got my info about carbonate have No clue if its valid I have a link to the page though. I m just taking new pics now they still kinda suck but a new color has showed up red to purple on edges and between veins lol hope pics show it.


What Salts to Use

Macro Elements

Nitrogen

Recommended sources

Calcium Nitrate (15.5% N): Commercial calcium nitrate also forms 1% Ammonium-N in solution, and supplies 20%

Calcium

Potassium Nitrate (13% N): Also supplies 36.5% Potassium

Ammonium Nitrate (33% N): Nitrogen form is split between ammonium-N and Nitrate-N, the total ammonium-N % of a

formula should be kept below 15% in most conditions.

Other sources:

Ammonium Phosphate (10%N): Supplies N and is soluble, but all N is in the ammonium form, which limits its appli-cation

in hydroponics.

Ammonium Sulfate (21%N): As above, redundant if using conventional salts. Urea (46%N): Can cause problems with

ammonia toxicity, and has no CF charge so difficult to measure.

Nitric Acid: Used often for pH control, but should not be considered a nitrogen source, especially not mixed with salts

in stock solutions.

Phosphorus

Recommended Sources

MonoPotassium Phosphate (21% P): Also provides 25% Potassium.

Other sources:

Ammonium Phosphate (22% P): Not used as the main phosphate source as too much ammonium would be produced.

Phosphoric Acid: As for Nitric acid above. Older formulations used it as a P source in 'Topping-up" mixtures but this

approach is no longer valid.

Calcium Superphosphate (10% P): Phosphate is highly soluble (as phosphoric acid), but produces an insoluble

calcium sulfate / calcium phosphate residue in hydroponics.

Potassium

Recommended Sources

Potassium Nitrate (37% K)

MonoPotassium Phosphate (25% K)

Potassium Sulfate (40% K): Also adds sulfur (17%). Useful as an additive to existing formulae to boost potassium

levels.

Other sources:

Potassium Chloride (49% K): Can be added in small amounts, although preferably omitted due to its chloride content.

Magnesium

Recommended sources

Magnesium Sulfate (10% Mg): Also adds sulfur. Is highly soluble and universal Mg source

Other sources:

Magnesium Nitrate Expensive, and unnecessary

Dolomite (Magnesium carbonate) Insoluble residues

Fertiliser sources of magnesium used in agriculture (Dolomite, Causmag etc) are generally very insoluble, and can not

be used for hydroponics.

Calcium

Recommended sources

Calcium Nitrate (20% Ca): Calcium is supplied almost entirely by this salt in most nutrient formulations

Calcium Chloride (36% Ca): Useful to add extra calcium without altering other elements. Limited use due to its

chloride content, so only used as an 'additive'

Other sources:

Calcium chelates: Expensive and unnecessary

Calcium Ammonium Nitrate: Not recommended due to ammonia content

Calcium cyanamide: Release amine - N into solution which produces free ammonia.

Calcium carbonate: Insoluble, and inherent pH problems

Calcium Sulfate: Highly insoluble.

Sulfur

Recommended sources

Magnesium sulfate (13% S): Potassium sulfate (18% S)

Other sources:

Ammonium sulfate

Sulfuric acid

Trace Elements

Iron

Recommended sources

Iron EDTA (6 - 14% Fe): Readily soluble, and stable form of Iron for nutrient solutions. Ensure the element (Fe)

content of the chelate is known before making formulations.

Iron EPTA: Using different chelating agents the iron can be protected in solution at higher pH levels.

Iron EDDHA " " "

Other sources:

Iron Sulfate (20% Fe): No longer widely used in hydroponics due to its instability in solution. In nutrient solutions iron

sulfate tends to form iron hydroxides which are insoluble.

Iron Chloride: As above

Manganese

Recommended sources

Manganese Sulfate (24%): Different sources may vary in Mn% due to being hydrated or anhydrous. In solution with

Iron EDTA, the manganese becomes partly chelated.

Manganese Chelate (*%): As for Fe EDTA * the content of Mn can vary between sources.

Boron

Recommended sources

Boric Acid (18% B), Sodium borate (Borax) 11 - 14% B

Zinc

Recommended sources

Zinc Sulfate (23% Zn), Zinc EDTA (*%)

Copper

Recommended sources

Copper Sulfate (25% Cu), Copper EDTA (*%)

Molybdenum

Recommended sources

Ammonium molybdate (48% Mo), Sodium Molybdate (39% Mo)

 

[Clix]

 

[Clix]

These are showing purple I am sorry the pics aren't showing exactly whats going on. I am using a filter to show "true" color because of the led light but its not showing things quite right. Waira- I am using a ph pen my coco ph is 7.1 and is refusing to move. my ph of my nutes is 5.8 going in. I'm using Ph perfect nutes so everything is chelated making it available at much higher ph ranges. Pretty much anything between 4.5 and 8 and your golden. The one issue I have that I will have to work out on my own cause its rare is that I require Extremely low doses of nutrients in my waters always have. Like 1/8 to 1/16 strength. Right now I am feeding 0.25ML per L and the recommended is 4ML per L. So dialing in is a little tricky even a slight to much of one nute crazy throws shit outa wack. The over watering curl is weird. The more I let it dry it gets worse but I seem to have found a happy medium for now. Thanx for your time @Waira , @medic grower and @Thefarmer1

This is what through me with carbonates
Factors that decrease P-sorption:

• Other anions, such as silicates, carbonates, sulfates, arsenate, and molybdate, compete with phosphate for a position on the anion exchange site. As a result, these anions can cause the displacement, or desorption, of phosphate from the soil exchange site. Desorption causes phosphate availability in the soil solution to increase.
• Organic matter increases P availability in four ways.
  • First, organic matter forms complexes with organic phosphate which increases phosphate uptake by plants.
  • Second, organic anions can also displace sorbed phosphate.
  • Third, humus coats aluminum and iron oxides, which reduces P sorption.
  • Finally, organic matter is also a source of phosphorus through mineralization reactions

This is the link just realized its talking about soil. This is what I get over tired and trying to find info lol
http://www.ctahr.hawaii.edu/mauisoil/c_nutrients02.aspx

 

[Waira]

...good pics Clix! The freckle-like spots look like Ca defc. starting to me, and the purple coloring down that low, this young of a plant, the yellowing and early mild necrosis on the teeth... that's likely P defc. starting... so up your Ca-Mg, and mix some bloom nutes into your veg' nute's to add extra P in there for a couple rounds,... make a 50/50 blend.... AN is pretty mild stuff, so I'd up your conc. some too,...likely why your getting non-pH defc. at this point,...

 

[Clix]

...good pics Clix! The freckle-like spots look like Ca defc. starting to me, and the purple coloring down that low, this young of a plant, the yellowing and early mild necrosis on the teeth... that's likely P defc. starting... so up your Ca-Mg, and mix some bloom nutes into your veg' nute's to add extra P in there for a couple rounds,... make a 50/50 blend.... AN is pretty mild stuff, so I'd up your conc. some too,...likely why your getting non-pH defc. at this point,...

Thanx and will do

 

[medic grower]

Your Ph levels are totaly Fucked up. Ph for Coco should be 5,5-5,8 in Veg and 6,2 in flower. So there you got your problem.If you putin 5,8 and 7,1 is coming out thats a Huge Diffrence. Give them a Propper flush till the ph is regulated to 6,2 at the runoff. I guess you aint watered with a 20%drain out of the pot every time???