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It's not terribly unusual for one to use double calmag at times.
Rust spots, yellowing
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So flushing her and upping the calmag a touch seems to have halted the progression whatever was going on with the first plant. Doesn't seem to be greening back up but I'm not sure that it will? Not too worried given how far along they are, going to ride it out and what I get is what I get I guess.
However, the rust spots on the other GG are starting to worsen. Is this a calcium deficiency? Phosphorus? Any ideas @Arthur or anyone else?
Pics show the worst leaves, but hints of it are showing up all over her.
Slurry test on this one is coming back around 6.2pH/300ppm. All else the same as my original post other than ~1.5EC total with 3mL/gal calmag
However, the rust spots on the other GG are starting to worsen. Is this a calcium deficiency? Phosphorus? Any ideas @Arthur or anyone else?
Pics show the worst leaves, but hints of it are showing up all over her.
Slurry test on this one is coming back around 6.2pH/300ppm. All else the same as my original post other than ~1.5EC total with 3mL/gal calmag
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Phosphorus will show on the edges, usually imitating a bit of nute burn initially.
Looks to me like this is also calmag related, may be the first girl was the most susceptible and now showing on the others.
Looks to me like this is also calmag related, may be the first girl was the most susceptible and now showing on the others.
She's had two feedings since I upped the calmag to 3ml/gal, but that's clearly not enough if this is indeed the problem. Any suggestions on dosage I should shoot for?
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Usually what your seeing is a result of what you did last week. If you've upped the amount, I'd probably give it a couple days to see if the correction follows.
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.... moose, coco cannot be treated like true soil, coco is in fact "soilless", like Promix etc., and more importantly, coco is very specialized even by thos estandards; many do's and don't's because of it's peculiar properties (cation exchange capacity)... typically it's closer to hydro on several levels,... it's best to know exactly what your pH and ppm's are going in, and going out, with at least 15+% run-off each time to keep nutes at appropriate levels... it runs at lower pH that true soil as well. Coco is a major Ca hog, Mg to a lesser degree... it binds these cations to itself preventing the roots from taking it up, until a certain saturation level is reached, then it gives/takes like it should, hence the need for elevated Ca-Mg with coco 9or special nutes made for it)...I see multiple defc.'s all well advanced now so it's impossible to untangle what's what, they all interact with each other on uptake, metabolism, etc.,... best you can do is get the Ca-Mg + nutes combined ppm's up in proper range, about 500-800 very generally speaking.... more important is to get that input/run-off pH and ppm info to us,....
@Waira I'll get tonight's runoff ppm/pH tonight after I feed! last I checked was 3 or 4 days ago, but I remember they were all +/- 0.1-0.3 of my input feed at ~5.8pH/1.3EC, though I can't recall runoff ppm.
I've upped my Calmag to 3.5mL/gal and total EC to 1.5 since I posted and it seems to have stopped progressing. Are you seeing multiple deficiencies in both plants, or just the first one I posted? What else are you seeing and what should I look out for in my other girls?
Here's a lights-off pic I managed to snap of her a couple days ago, hasnt changed much since adjusting my nutes. I'm not usually home before the lights come on.
I've upped my Calmag to 3.5mL/gal and total EC to 1.5 since I posted and it seems to have stopped progressing. Are you seeing multiple deficiencies in both plants, or just the first one I posted? What else are you seeing and what should I look out for in my other girls?
Here's a lights-off pic I managed to snap of her a couple days ago, hasnt changed much since adjusting my nutes. I'm not usually home before the lights come on.
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@Waira I fed @ 1.5EC/5.8pH just now, runoff (into a clean tray) on the first plant is 5.8pH and 1.8EC. I'm guessing the higher runoff EC means I should dial the nutes back a bit? And I've always made sure to have plenty of runoff on all of them.
I think the biggest thing I've learned from all of this is just how individual each plant, and their needs, are. I think I'm going to give organics a shot next and try out Coast of Maine's Stonington mix, give some of the control back to nature haha
I think the biggest thing I've learned from all of this is just how individual each plant, and their needs, are. I think I'm going to give organics a shot next and try out Coast of Maine's Stonington mix, give some of the control back to nature haha
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:smoking: My coco guru says run-off shouldn't be more than about 250ppm higher than inputs.... as for what ppm, that's hard to generalize since each plant is going to like slightly different feed amounts,.. I think he said 1.5-1.7EC (in USA, 1.0 EC = 500ppm..Truncheon and Aussie? standards are different; chart is in the Reference section I believe)... the idea is to not let the nute salts build-up, as you need to feed every time, or Ca-Mg at least, never water alone (may screw the CEC), hence the run-off testing each time...
.... pIcs above look like mainly P defc.; odd you get 300ppm on the slurry,... how did you do this specifically? Did you do 1:1 or 1:2 ratio of medium to water (must be RO/Di or readings will be skewed for pH and ppm)...
... pics on first page, Ca defc. maybe a bit of K defc., P defc. possible S defc.,..ditto for a micronute defc, again it's impossible to pick it apart at that advanced stage, symptoms can overlap, or when in combo with others may present differently as well,...
... current r-o EC is OK at 0.3EC difference,... this is how coco is like hydro, you want a steady moderate to high level of nutes present all the time... this is partly why skilled hydro/coco users can get monster plants, for pots/coco huge plants too, for the smaller pot volume (most generally don't go bigger than 3gal, no real need)
.... some of the damage/symptoms isn't going to correct, halting of progression is what to look for,...
.... pIcs above look like mainly P defc.; odd you get 300ppm on the slurry,... how did you do this specifically? Did you do 1:1 or 1:2 ratio of medium to water (must be RO/Di or readings will be skewed for pH and ppm)...
... pics on first page, Ca defc. maybe a bit of K defc., P defc. possible S defc.,..ditto for a micronute defc, again it's impossible to pick it apart at that advanced stage, symptoms can overlap, or when in combo with others may present differently as well,...
... current r-o EC is OK at 0.3EC difference,... this is how coco is like hydro, you want a steady moderate to high level of nutes present all the time... this is partly why skilled hydro/coco users can get monster plants, for pots/coco huge plants too, for the smaller pot volume (most generally don't go bigger than 3gal, no real need)
.... some of the damage/symptoms isn't going to correct, halting of progression is what to look for,...
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