Too much N and too little Cal/Mag?
- Thread starter AnanKofan
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wingman1305
Just another dude
I'm guessing your ph was really low? Cal mag and maybe phosphorous issues here is what I see
Can we get a pic of entire plant in natural light? Soil or hydro? Nutes and how often you feed?
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...definitely some N-tox here-- note the tip curl, besides the deep green color,... the necrotic spots on the tips and margin "teeth" are typical K defc.,... N-tox will interfere with K uptake, and also, the soil pH is suspect (too acidic maybe),... I saw the run-off pH, nute soln. pH too, but that's not how the calculation is done-- check out this thread for run-off testing method, and keep in mind this method is still very prone to measurement error in general, but this method helps reduce it some- 
... an actual quality in-soil pH probe is the ticket! https://www.autoflower.org/threads/...-for-run-off-testing-and-ph-estimation.41733/
.... run this test, and do the calculations, and let us know,... it's important to determine if you have a pH lockout of K, and/or N-tox issues with it,... or even just a plain lack-of situation! -then we can plan a fix for it,...
... an actual quality in-soil pH probe is the ticket! https://www.autoflower.org/threads/...-for-run-off-testing-and-ph-estimation.41733/.... run this test, and do the calculations, and let us know,... it's important to determine if you have a pH lockout of K, and/or N-tox issues with it,... or even just a plain lack-of situation! -then we can plan a fix for it,...
Thx Waira I wiil do that test but please corect me if im wrong (sorry for my english)
Runoff Test step by step:
1. Water container till saturation with normal water (normal water with no ph'ed em?)
2. Drain container for an hour
3. Water conteiner with DI till there be minimum 50ml runoff
4. Collect and measure runoff
Right?
Runoff Test step by step:
1. Water container till saturation with normal water (normal water with no ph'ed em?)
2. Drain container for an hour
3. Water conteiner with DI till there be minimum 50ml runoff
4. Collect and measure runoff
Right?
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..pardon the delay, mate,.... Well, you did the first step right, flushing,... you can use regular tap water for that, in fact it's better, since it has buffering minerals in it, unlike DI,... also, the last pour through during flush should have 1/4 strength nute's + Ca-Mg in it, to replenish what was stripped away,... 5.4 is much better, but getting to around 6 is best, and that's going to take some pH up product in your water and nute's especially; nutrient solutions tend to be acidic, even organic ones! What's your tap water like? Do you know how hard it is (ppm's), and if it's chlorinated? Using it will help, and it'll keep it's pH better that DI or RO water, again, because those have no buffering minerals (CaCO3) in them, so the pH will swing wildly from even small inputs, and be unstable,... Try to get your water and nute' solutions up to 7.0, and consider getting an in-soil pH probe, like the Accurate 8; run-off testing makes you saturate your medium, something the roots dislike! Until then though, you'll need to test pH on occasion to see if your corrections are taking hold,....Thx Waira I really appreciate your help.
OK so step by step coz Im a little
1. She get flush with tap water
2. After flush she het her 30% of her nutes + cal/mag
3. I dont know ppms of my tap water I only know that its hard and phe is around 7,6 or moore (I will check it tommorow)
4. Yes its chlorinated :/
5. So I need to make my nuts solution up to PH 7,0? And what about absorption of nutes in that high ph?
OK so step by step coz Im a little
1. She get flush with tap water
2. After flush she het her 30% of her nutes + cal/mag
3. I dont know ppms of my tap water I only know that its hard and phe is around 7,6 or moore (I will check it tommorow)
4. Yes its chlorinated :/
5. So I need to make my nuts solution up to PH 7,0? And what about absorption of nutes in that high ph?
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