Diff pH in runoff Diff colours Same water

What strain -bag seed
-Age of plant - 20wks
-Method: Organic peat based soil; perlite, vermiculite, worm castings, dolomite lime, neem oil treated, . Seedlings planted in 5gal of this week 1 from sprouting so 19wks in it.
-Vessels: Type and capacity of container fabric 5gal
-PH pen 0.3 out, I thought I’d been at 6.5, and TDS of Water, Solution, runoff run off 1500 for plant that’s not lite green, 1400 on lite green plant. Run off pH’s 6.1 on darker plant, 6.7 on lite green plant corrected 6.4 & 7.
-PPM/TDS or EC of nutrient solution if applicable usually between 300-1000, I recorded all feedings on each watering pic I took for memory reasons
-Method used to measure PH and TDS blue lab pH pen & conductivity pen
-Indoor 1mX1mX2m scrog, size of grow space
-Light system List brand and wattage/spectrum. Lumatek full spectrum led 300w 800umol
-Actual wattage draw of lights
-Current Light Schedule12/12
-Temps; Day, Night 22’c nite 25-32’c day
-Humidity; Day, Night 40:60
-Ventilation system; Yes, No, Size oversize vent fan goes constantly
-AC, Humidifier, De-humidifier No,
-Co2; No

They’ve just completed week 7 of flowering. I’m concerned about both of them, I’ve never turned a plant purple and lite green at same time. Same watering schedule and water. I got bluelab cleaning kits and cleaned my pens today, conductivity pen fine, pH pen out and now soaking in kci liquid for 24hrs and hopefully calibrate tomorrow.

My NPK ratio on flowering nutes organic liquid guano superbloom 1-9-1 + alternate feedings High yield organic seaweed based 5-4-11, also CALMAG agent 0.1ml with some feeds.
I recently purchased power bud A+B 20-10-40 and had done two feeds of this earlier this week, plants have been this colour for weeks tho

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Could it just be genetics? They look fairly healthy overall.

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In the second picture the light is pointed sideways. Cold can induce color. Is that possibly a cold spot in the tent?

Look really good though.

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They may be from the same bag but definitely respond differently to nutrients. In veg the lite green one got yellow tips easily, when I added too much calmag. The other seed took it fine. Now in flower the one that doesn’t get nute burn in veg gets nute burn in flower and turns purple pink yellow. Whereas the other isn’t getting nute burn and us yellowing. I’m so confused.

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Are the trichs similar in age and color?

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I did clones to sex these two, rooted, flipped for 2-3wks then ReVeg them, the lite green leaf one takes longer to flower than the darker one, so they def grow at diff rates. The back one, lite green, has been catching catching up.
I’m planning on running their clones separately in flower next rounds.

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I wonder if one has just matured quicker and the colors are deepening?

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Do you reckon the lite green plants just hungry?

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I’m not sure my iPhones taking the best trich pics, that was darker plant yesterday


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I think they just matured differently? My guess is the other one will begin to get darker soon? The flowers in the 2 bottom pics look nearly identical.

I do see a little tips down on both plants. Not sure but I think its N deficiency? It’s the only thing I see and thats not even very pronounced.

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The trich pics are from one plant, I’ve not got the other one pics as yet.
The fan leaves are Def very diff


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Thanks for all your input :pray:

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Agree on the cooler temps, these have been in the lower 50s at night the last couple weeks, they aren’t phosphorus deficient though, the lowered temps usually do it for me, but I hadn’t considered the light brightness. I have ran these at 1100 ppfd til this week, dropped it to 900 for finish and ripening. Phosphorus deficiency usually gives them a blue color with weak spots in the leaves.


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I love long time experienced grower advice :sunglasses: it’s how I got started. Thinking you’re accurate, my lights are practically brand new, only 800umol but in the right size space for it. I’m down under & started this grow in the last month of winter, it’s a month into summer now, maybe contrast in night/day temps, my nutes I discovered aren’t high numbers, so deficiencies are def possible. Thanks Growmie

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They look sooo pretty :heart_eyes:
Genetics could be a thing here too :thinking: my son reckons his mate got seeds from Afghanistan, for which my seeds came from a bag of the White Rhino from Afghanistan. Lol the best stuff he’s ever smoked, must’ve been better than my stuff years ago he enjoyed. :joy:

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One day I’ll measure ppfd :relieved: that would be so cool

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I bred these seeds a couple years ago, thinking of back crossing a couple of the purple clones to try and stabilize the color and trich production on this strain.

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Lol it’s been a few years since I grew & harvested, I guess I forgot how the plant progresses into autumn colours, this plant doesn’t look too bad under natural lighting

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