Plants for sure change as they progress
I have three different feeds I do now, makes a difference for sure
Two weeks can be a big difference in a plant
I have three different feeds I do now, makes a difference for sure
Two weeks can be a big difference in a plant
Nutrient requirements are very strain- (and even pheno-) dependent as well.
Since it's outdoors, have you carefully inspected the undersides of those leaves (possibly with a magnifying glass) to check for pests? I agree that it looks like a nutrient or pH issue, but... Especially since I read in a later post that it's only one plant showing symptoms.
I'm liking that basil hempy! Wish I'd thought of doing that for Mom. OtOH, as stingy as she is with the water, hempy is probably not for her, methinks
.Only problem with a combined product like that is it makes it pretty much impossible to adjust the ratio of the two elements (and that is fairly important, IMHO).
LOL at cannabis plants smelling like spoiled milk. I once found myself wondering whether those calcium supplements that they sell in the vitamin aisle were in any way useful. But I didn't know if they'd dissolve into solution at the pH ranges we operate under, whether or not the filler would be harmful (I'm assuming the pills aren't 100% Ca, but IDK), et cetera.
IDK why the forum kept your bold text but dropped the custom color. Then again, I have had lots of bad luck with the new forum's message entry routine, and this thing is relatively harmless, lol, so I'm not going to mess with it because I'll probably screw something up. Anyway...
Been years since I had well water (and that was more ill than well - there were five or six old wells on the property, so I guessed that some time before I lived there, someone had the money for regular water testing and kept finding theirs to be somewhat toxic), so I cannot swear to it, but I was thinking that a Fe toxicity showed symptoms (brown spots) on the new upper growth first. IIRC, S toxicity produced runty plants, lol, that looked like they'd been chronically overfed (brown leaf tips and the like).
Again, don't automatically assume I'm correct with the above.
Ya know.... the knobs on the growing machine are numerous and all are unique. They all impact each other and overall plant growth. The knob that shifts the ratio of my calmag mix seems like a really small one in Tead's brain.... so small that I don't bother twisting it.
For example, I would see ph adjustments to allow for full uptake of the elements available as a much, much larger knob and Tead would surely look at twisting that knob first.
Yeah.... avoid milk whenever possible... but it does work and it works quite well if you can stomach the stench after a few months in a hot grow room.
I've seen grows using pills. It's a very expensive form of calmag... but has worked in a pinch before.
Boy-howdy, lol, you're not kidding. I'm lucky to afford a bottle of generic multi-vitamins a few times/year. But it's nice to know that it'll work in a pinch. BtW, IIRC, not all "for human consumption" supplements contain magnesium, lol. I think the majority don't, actually, but that's mostly guesswork.
BtW, taking a multi-vitamin first thing in the morning, drinking plenty of fluids, and urinating a little into a gallon jug, then filling the jug up with water... Seems pretty disgusting
. But I've read that people have actually done this with some success for plant fertilizer. Me, I chase dogs out of the yard when they look like they're searching for something to lift their leg over, but it takes all kinds, I guess.Yeah, I understand about dealing with the major things first. For example, the question of whether or not a plant has enough N is of little importance when said plant is so lacking of water that it has completely wilted; first, water the poor thing, lol.
But cannabis needs a lot of Ca. Might be the second most important element, IDK. Anyway, it uses something like three (or possibly four) times as much Ca as it does Mg. Okay, no worries. But our nutrients contain some of both. If one is using distilled (etc.) water, and one's medium contains none of either then, again, no worries. Either the nutrients contain enough or they don't and one assumes that the nutrient company at least got the ratio of these two elements correct. If they are a little lacking in the amount, well, hey, the same nutrient company almost certainly sells a handy "Ca/Mg" product, right?
However, if a person is using tap water, their water might already have Ca in it (and it might be in a form accessible to the plants, or at least partially so). Grab one of those generic "Ca/Mg" products to get your magnesium and you now have an overabundance of calcium. Ergo, you(r plants) need even more magnesium now. If this is significant enough, you might even start seeing signs of a Mg deficiency - even though the actual amount of Mg would have been sufficient, had there not been an overabundance of available Ca present.
What, no worries still, lol? You've got the ratio back on track by boosting the Mg? Well... maybe. But you might also start seeing other issues after doing so, because you now have an overabundance of both calcium and magnesium. Ratio good, gross amount bad. Too much calcium can lock out potassium, manganese, iron... and magnesium. In a hydroponic environment, excess calcium can come in contact with sulfur and precipitate out of solution. Et cetera.
Little knob? Okay, sure. Still an important one to "tune?" YES!
EDIT: If you don't mind visiting some other cannabis-related forum for a minute or two, do a web search for:
Code:
"There is no such thing as a "cal-mag" deficiency..."At a glance, that thread's author seems to be talking about the same thing. Kind of in a hurry at the moment (family duty rapidly approaching
), so I can't swear to it, but it looks promising.
I really don't need to delve into the science of it or discuss the ratios. I've seen, and I know what works in my world. When I get rust spots, I check the PH and boost the calmag. I think the minute issues involved in the exact ratios are tiny knobs that I simply find no need to turn.
Sharing experience and results rather than delving into the data.
Sharing experience and results rather than delving into the data.
Sort of like building a table. Get all finished one of the legs is a little too long. So you measure and cut it down. Well now it's too short, so you shorten the other three legs to even them up. Uh oh, you cut off a little too much. Now the original leg that was too long is too long once again.
That for me is what is so valuable about this site. You run into a problem and by golly there is someone who has already encountered that exact same problem, solved it, and now share with you how to solve it too.
And, of course, you hit probably the most common one.... everybody gets the spots until they have things smoothed over and under control.
I fed all my hempy girls today the same 1/2 strength nutes I've been giving them with the exception of Spot. Spot got an extra 1.5ml of Cal-Mag. I know the affected leaves won't get any better, I am hoping it prevents more leaves from spotting.
The ironic part... they'll actually appear worse as the leaf grows and stretches out the damaged parts with it.
I forget.... are you on top of your PH or are you not testing? Often these issues are PH related rather than a straight deficiency.
I forget.... are you on top of your PH or are you not testing? Often these issues are PH related rather than a straight deficiency.
I have been adjusting my PH to around 5.8 Sweet Sue said I should be down around 5.5 I believe. I would have to check. I'm not going to do anything drastic. I am afterall talking about just 3 leaves on a single plant. I am adding a little more Cal-Mag so will see if that is the ticket.
BTW, I don’t know about your well water Beez, but this is the nutrient profile provided by the dose you described.
Not too bad. Probably a little lower in K and Ca than it should be, but that’s easily corrected.
Cheers!
My friend I can't thank you enough for taking the time to do that for me. So if I add 1ml of Grow Big and 1ml of Cal-Mag that particular plant might be happier?
NP Beez! 
Adding 1ml of Grow Big to 1 gallon will raise the K about 8.5 ppm, but your N is already too high. And we already addressed the Ca by increasing your CalMag by 2ml.
To raise the K with your current lineup, you could check out something like Dyna-Gro ProteKt, with 3.7% K, and which also provides 7.8% silica.
Better would be something that already has K, Ca, and other nutrients in more correct ratios. I’m trying something new right now (got a free 230g sample from their website), and will report back soon. PM me if ya want the link (not sure it’s kosher to post it).
Adding 1ml of Grow Big to 1 gallon will raise the K about 8.5 ppm, but your N is already too high. And we already addressed the Ca by increasing your CalMag by 2ml.
To raise the K with your current lineup, you could check out something like Dyna-Gro ProteKt, with 3.7% K, and which also provides 7.8% silica.
Better would be something that already has K, Ca, and other nutrients in more correct ratios. I’m trying something new right now (got a free 230g sample from their website), and will report back soon. PM me if ya want the link (not sure it’s kosher to post it).
Mega Crop? I saw it was advertised as being a smidgen cheaper (per mixed gallon) than Jack's Professional Hydroponics (5-12-26), and substantially cheaper than lots of other things (~12% as expensive as Advanced Nutrients' Connoisseur line, lol).
Reports from afar....
2ft tall, 6in diameter PVC hempy pot. SSDC autoflower.
Size references... the grey tube is a 2L cut at the curve. The wooden planks are 4x4's. The shoe is size 11.
There were a good bit of white feeder roots stretching down to the res, but they didn't start until the 1ft level. The root consisted of one big mainstem breaking directly into tiny feeder roots starting at the 1ft point.
The takeaways for Tead....
Wicking only works to 1ft. Anything more will much for frequent or automated watering. I watered every 2 days and whenever it rained.
Weight causes the perl to compact in a pot taller than 1ft causing a much more dense layer down low.
Not doing any more 2ft pots.
This has been the last in a long line of trying to make the 2ft form factor work. Tead now officially throws in the towel and leaves such ideas to others.
I've got a 5gal going that's a bit taller than 1ft... but not much. I've had fine grows in the 5gal form. I think I'll stay with that form when I want to make a monster.
2ft tall, 6in diameter PVC hempy pot. SSDC autoflower.
Size references... the grey tube is a 2L cut at the curve. The wooden planks are 4x4's. The shoe is size 11.
There were a good bit of white feeder roots stretching down to the res, but they didn't start until the 1ft level. The root consisted of one big mainstem breaking directly into tiny feeder roots starting at the 1ft point.
The takeaways for Tead....
Wicking only works to 1ft. Anything more will much for frequent or automated watering. I watered every 2 days and whenever it rained.
Weight causes the perl to compact in a pot taller than 1ft causing a much more dense layer down low.
Not doing any more 2ft pots.
This has been the last in a long line of trying to make the 2ft form factor work. Tead now officially throws in the towel and leaves such ideas to others.
I've got a 5gal going that's a bit taller than 1ft... but not much. I've had fine grows in the 5gal form. I think I'll stay with that form when I want to make a monster.
That’s it TS. It’s a 1 part, and mixes easily. I’m only using 1.25g per gallon (1/2tsp for 2gal), so this sample will make 184 gallons. Works out to about $0.01/gal for a light hempy dose (~40ppm N). And all kinds of other goodies are included (vitamins, amino acids, chitosan, kelp extract, silica, etc).
Edited to add that 1.25g/gal gives me a pH of 5.9 with my tap water, so no pH fiddling for hempy!
Oh, and a shout out to @DrDoob for bringing MegaCrop to my attention!
@Tead, the final results of your research make total sense. My Auto re-veg is in a 5 gallon bucket, and the reservoir was within 8-10” of where the roots touched the top of the perlite when it was transplanted into hempy. It’s very happy and full now.
Even the new seedling was apparently able to reach the wicking zone very quickly (not being aware it was a seedling, I didn’t give it any special attention/watering).