Spotting
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What is your feed/nute mix? Grow medium? Lights?
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I think you may be right, what makes you think your over-feeding? Too much Calcium can lock out K - potassium along with others and the symptom presents the same in both cases. That is what that leaf looks like to me. We need more information to maybe make recommendation.
Answer these as well as you can:
-Problem: (brief description)
-Medium/grow method: soil; soilless-- coco, or peat based like Promix, etc. (please provide the actual product name); DWC, NFT, etc.
-Feed and supplements used: include brand, dosage/strength, frequency of feeding and watering (alone); method-- by hand, drippers, rercirc' or drain-to-waste,... N-P-K #'s too if you can!
-Water source: RO/DI; tap- dechlorinated-?..... EC or TDS reading; pH (don't bother with this on RO/DI, do bother with TDS/EC though to confirm it's working well enough)
-Strain and age
-Climate: night and day ambient T and RH%; res' temperatures; any extremes in T/RH% exposure
- Light used: HID, LED, COB, combo of,... wattage; light cycle hours (20/4, 18/6 , etc.); distance to tops....
-Additional info: How long have the plants been affected?...How fast did symptoms appear?... Anything else you think might be relevant..
--Pictures including WHOLE PLANT PICS, and troubled leaves.. use normal light or flash as other light sources ruin color rendering, critical for diagnostics!
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(copy and paste)-->
Problem:
Medium/grow method:
Feed: and supplements used:
water source:
Strain/age:
light used:
Climate:
Additional info:
Medium/grow method: pro mix mycorrhizae high porosity
Feed: and supplements used:
General hydroponics flora micro 5-0-1, calimagic 1-0-0, liquid koolbloom 0-10-10, 1 teaspoon each with 1 gallon of water split between two plants so roughly 1.5 L per plant
water source:
Tap water
Strain/age: purple punch day 54
light used:viparspectra 450w led
Climate:78 degrees f, 60% RH
Additional info: my Dark devil which is about 2 weeks away from harvest seems to be ok, wife fed it while I was away for work, lol. Appeared last 3 days, feed every other day, on 24 hr lighting
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this is all on upper leaves right? It looks like Ca defc., but it could pass for early Mn defc., a micronutrient as well... LED does elevate the need for Ca, so up that to 1.5 tsp/gal... I see you're not using the full 3 part system, and here's where I think the Mn defc. is coming from; the Micro doesn't have all the micronutes in it, usually for various chemistry related reasons. If you leave out part of the series, you end up shorted on things... I'm not 100% on Mn defc. , it's rare, but it happens....Your tap water, do you have pH and ppm on that? In-pot pH should be checked just to make sure it's in range,... it's uncommon for pH to go alkaline with Promix, but really hard water cumulative inputs can start to drive pH up, and lock out things like Mn,....
Look into Earth Juice Microblast for micro's, I keep that around at all times and do weekly inputs just to cover my ass! Micro's are not needed in large amounts, but play BIG roles and shorting on them may not show for a while but while have negative impact on the plants performance,...
Your tap water, do you have pH and ppm on that? In-pot pH should be checked just to make sure it's in range,... it's uncommon for pH to go alkaline with Promix, but really hard water cumulative inputs can start to drive pH up, and lock out things like Mn,....
Look into Earth Juice Microblast for micro's, I keep that around at all times and do weekly inputs just to cover my ass! Micro's are not needed in large amounts, but play BIG roles and shorting on them may not show for a while but while have negative impact on the plants performance,...
Great response thanks! The hard water could be it, I just had to replace the salt in my water softener. But you say I'm missing a part in the 3 part system what would that be? The floragrow?
Flora grow, Micro, bloom.
edit: (looks like they have a 2 part system as well)
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@Actionjackson There may be conflicting opinions about this but using water softened with salt replaces the calcium and magnesium ions in the water to sodium ions and this can lock up nutrients. Unless your tap water is really hard I would use it without the softener treatment.
I have the floragrow but I thought I should stop when I started the bloom, should I still be using the grow? I haven't used it for about a month
I use all 3. As flowering progresses I slowly cut back on the grow and I add the amount I cut from the grow to the flora bloom. Mostly I follow the instructions on the bottle, cut it by 50% of what they recommend, and amend the grow/bloom as mentioned above as flowering progresses. My last feed will be zero grow all Micro/bloom. I max out at about 800ppms with the autoflowers.
I'm not positive, but I believe koolbloom is a pk booster to be used in addition to florabloom, not as a replacement. Like I said, not positive, but it's something you might wanna look into further.
I'm not positive, but I believe koolbloom is a pk booster to be used in addition to florabloom, not as a replacement. Like I said, not positive, but it's something you might wanna look into further.
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