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Maui Waui CA deficiency?

MicroNighthawk
MicroNighthawkstarted grow question 2 years ago
Can anyone confirm or guess at the kind of deficiency my plant is having? I am not sure if "hard water" (instead of RO so far) is the right answer or if I need some special sauce... Thank you! Details here: growdiaries.com/diaries/139533-grow-journal-by-fejg87fb2skvf
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Week 9
Leaves. Color - Dark-brown
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GrowingGrannie
GrowingGrannieanswered grow question 2 years ago
You're giving your grow far too much nitrogen! And you've probably got some lockout issues as well. Since they're in flower, you need to drastically cut back on your grow nutes as these contain the most nitrogen... and start giving them some bloom nutes as these will have the other micronutrients weed needs during flowering. @gmslave is also correct - you MUST check the PH of your runoff - it should sit between 6.0 and 6.5 with 6.3 being the "sweet spot" ... if it is out of that range, you'll need to do a flush (I would encourage that regardless as you've been giving it too much nitrogen)... To do a flush, you need to run PH'd water through each pot at the rate of 3x the pot size - since you're growing in 4-gallon pots, this means you need to flush each pot with 12 gallons of PH'd water. Check the PH of the runoff before you put the last gallon through and if it's within range, you can add nutes to the last gallon - but no more grow nutes! It's easier to fix a deficiency than an excess... Good luck!
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MicroNighthawk
MicroNighthawkanswered grow question 2 years ago
The water I am using is very hard and filled with stuff @ around 400-500ppm. I ph-adjust from ~7.5 to 6.5 with maybe 1-2 drops of Nortembio Agro PH- concentrate. Today: Flushing with runoff @6.7ph; 1.500ppm --> Levels came down to 850ppm (still @6.7ph) after putting about 15l of ph-adjusted tap water into my 12l of soil. All my Biobizz nutrients contain nitrogen (grow 4%, bloom 2%, top-maxx 0.2% & alg-a-mic 0.2%). So I used the alg-a-mic as a last watering mixed with TNC Mycorr(Max) - a mycorrhizal inoculant - runoff was 850ppm & 6.2ph
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GMSgrows
GMSgrowsanswered grow question 2 years ago
Next plain watering give enough that you have a little runoff water. Collect that water, let it settle a few minutes and check the ph and ec levels. Make sure their levels are correct and it isn't lockout happening, either from ph or ec.
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