Timv
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- Jan 10, 2025
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Started happening right around when I introduced the PK
Always 5.8 unless I need to recalibrate again but I just did before this cropLooks PH y . Any idea on pH?
You think it could be a potassium issue though?I calibrate every 10 uses and picked that number based on the 60 journals I read.
When you show a deficiency you eliminate things that cause a deficiency before you add chemicals to treat. pH testing is always recommended as a first step. To just add chemicals can just make it worse if it is pH related or root problems from rot or pests.You think it could be a potassium issue though?
In just one day the purple has gotten worse and these are 2 different strains. Will be testing the runoff todayWhen you show a deficiency you eliminate things that cause a deficiency before you add chemicals to treat. pH testing is always recommended as a first step. To just add chemicals can just make it worse if it is pH related or root problems from rot or pests.
Zero point tester slurry test or runoff test and ensure you have spot on pH and then treat.
Nutrient line: CannaTip necrosis does look like its "K" related. However we need more details or we're playing a guessing game. What's your whole routine? Nutrient line, lighting, temp/vpd etc. Your ppm looks high enough that I wouldn't think you're deficient but your N-P-K ratios may be off. When ratios are out of balance, your plant could have trouble uptaking a needed nutrient even its present in your mix. For example, too much calcium will interfere with Mg uptake. You have zebra striped older fan leaves.
Are you growing in soil? Coco?Nutrient line: Canna
Lighting : LED
Temp: 72 to 80
Humidity: 50-63ish I did have some spikes up into 70s but resolved that
Growing in cocoAre you growing in soil? Coco?
Hmm I’ve been thinking possible lockout if increasing ppm too soon could’ve been an issue but I don’t feel as I didIf you put in 1250 ppm and you get 1370 out that indicates a buildup leading to lockout according to ai. If I am reading this backwards it indicates uptake of nutrients is working.
Should I do a foliage spray for now and should I just start feeding at 6.2 then ?Try and get that runoff pH increased just a little bit to 6.0 to correct your cal mag lockout.
Hmm I’ve been thinking possible lockout if increasing ppm too soon could’ve been an issue but I don’t feel as I did
No, never spray anything liquid on flowering cannabis. You might get away with it for a while but its an invitation for trouble.Should I do a foliage spray for now and should I just start feeding at 6.2 then ?
I second that ... Since you're in coco and its basically inert, you can flush out the soil like has been suggested by another poster. You can use a wetting agent if you like to help break up the salts buildup. However, afterwards you will need to water with a round of nutrients because you will have stripped the accumulation from the coco. Just reset lower than 1250 ppm.The accumulation is also likely what's causing the low pH runoff.
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