Support ticket. Leaves yellowing center with browning

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Clone cherry pie , clone elmers glue
6.3 to 6.2 phed every two days feeding coco
70-80% nutz
6 - 1000wat Hps ,
indoor
Night temps 70°
Day temp 80° - 88°
50-60 humdi day night
Vent 6 inch in and out room fresh air in
Co2 bag
6 inch cool tube light fresh in an hot air out side
No Ac yet not hot enough
Humid doesnt go over 57 day night so far
I ve done 5 indoor grows and 1 outdoor this is new cant find this problem online

Starting third week flower PH 6.2 using advan Nutz, had one day lights didnt shut off but cooling vsns did temp reached 103.5 for few hours 4 out of 8 plants doing this , 2 cherry pie 2 elmers glue, going to flush pots to with RO water and calmag,

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fill this out please

First day in flower i nutz veg nutz one more time waited a day then RO water then waited a day then planet earth tea, then waited a day and flower nutz second week

I do not grow in Coco myself, but I believe your pH should be slightly lower in that medium, similar you hydro. You may have some lockout due to this.

@Gossm413

Read this it has lots of information and save to your files for future reference

First off, some interesting, basic facts…

Your marijuana plants need 18 essential elements. They get carbon, hydrogen,
and oxygen from atmosphere and water. They get the 15 other elements via their
roots. These elements are sometimes grouped as major, secondary, and trace elements.
The groupings are determined by how much of each element is needed–some are needed
a lot more than others, but all are necessary.

The major elements are nitrogen, phosphorus, and potassium. The so-called secondary
elements are magnesium, calcium, silicon, and sulfur. Some people group these seven
elements as “macronutrients” because they’re required in larger weight amounts than
the remaining essential elements your plants need. Those are called micronutrients,
and they’re very important even though your plants don’t need as much of them. We’re
talking about iron, zinc, copper, molybdenum, boron, manganese, cobalt, and chlorine.

Until recently, silicon wasn’t even included in the essential element list, but modern
research on marijuana plants indicates your plants use silicon to build strong cell walls,
resist pests and diseases, and to create THC glands.

Nutrients problems most likely to reduce growth rate, THC percentages, and harvest
weight often involve nitrogen, phosphorus, potassium, and calcium. But problems with
deficiency or excess of any of the 18 essential elements is likely to cause serious
trouble for your marijuana plants.

How do you know your marijuana plants have nutrient deficiency or excess? Look at your leaves.
If they’re not lime green, upright, and looking like the perfect marijuana leaf photo
accompanying this article, your leaves are trying to tell you something.

But here’s a twist…it may not be your organic fertilizers, soil, or hydroponics nutrients
that are actually causing the problem. Signs of nutrient element shortages or excess may
merely be a symptom of the real cause of the problem. For example, low temperatures
interfere with nutrient uptake. So you can’t solve a temperature-related nutrient
deficiency problem by increasing your nutrients dosing…you solve the temperature
problem instead, so your marijuana plants can take in what they need.

The Right Amount of Nitrogen
Makes Your Marijuana Healthy and Green

Nitrogen makes up 78% of the dry volume of our atmosphere and plants need to
capture it if they want to grow at all.

No doubt you already know nitrogen is the big N in the N-P-K on your hydroponics
nutrients bottles, and it’s a big, important ingredient for your marijuana growing success.

Unless your plants are in the final weeks of flowering phase, yellow leaves
(especially lower leaves) are signs of trouble, and the troubles are most often
a nitrogen deficiency. It starts with the bottom leaves and works its way up until only the newest growth is green.

On the other hand, if your marijuana plants are overdosing on nitrogen,
the leaves will be extremely dark green.

Either way, nitrogen problems mean big trouble for your marijuana plants because nitrogen is
absolutely necessary for plant survival because nitrogen is a primary elemental support for
protein synthesis, growth, leaf development, metabolism, and root health.

If you oversupply nitrogen, you get marijuana plants that are too tall, thin, and gangly.
It’s harder to get successful flowering from plants that have been overfed nitrogen.

If you see that the very tips of your leaves are yellow, that’s an almost sure sign of nitrogen
deficiency, which occurs most often during a fast-moving grow phase or when you’ve switched
to an improperly-configured bloom fertilizer during flowering. Many brands of hydroponics
nutrients do not contain the right ratios of nitrogen, phosphorus, and potassium, or they
contain the elements in forms that are not easily available to your marijuana plants.

These potential nutrients problems are especially harmful in flowering phase, when your plants
only have 12 hours to run their photosynthesis metabolism.

Nitrogen deficiencies first show up as leaf tip yellowing, especially on lower leaves.
Then it spreads to affect entire leaves, and moves up the plant. When you do research
on marijuana strains before you buy seeds or clones, take note of the strains that are
said to be heavy feeding. Those will likely want higher parts per million of nutrients,
and they are hogs for eating nitrogen, potassium, and phosphorus. In bloom phase, your
marijuana plants want less nitrogen, and more potassium and phosphorus.

The only time you tolerate signs of nitrogen deficiency is when you’re more than halfway
through flowering phase. During those closing weeks, your marijuana plants are focusing on
floral production so they sucks stored nitrogen out of leaves rather than doing the work of

That’s why you don’t need to add extra nitrogen (beyond the amount found in a properly-configured
flowering base nutrients product) to flowering crops after they’ve passed the midway point of
flowering cycle: excess nitrogen during flowering negatively affects bud development, taste, and aroma.

Fixing Nutrients Problems to Save Your Marijuana Plants

In later articles in this series, you’ll see a more detailed program for analyzing and fixing
marijuana nutrients problems but it’s important to understand a couple of things right away.
One thing to know is that organic or “natural” fertilizers often fail to remediate a deficiency
fast enough because they aren’t immediately bioavailable to your marijuana plants.

If you’re absolutely sure your marijuana root zone pH, grow environment, water, and other factors
are what they should be, and your plants are still showing signs of nitrogen deficiency in soilless
hydroponics marijuana growing, it almost has to be that something’s wrong with your base nutrients.

What are your remedies? If you’re growing in soilless hydroponics using synthetic hydroponics
nutrients, you have it pretty easy.

First, make sure your pH meter is working perfectly (or use the new pH Perfect base nutrients
that automatically buffer and adjust pH to the ideal sweet spot). Flush your plants (I prefer
Final Phase or Flora Kleen), dump your reservoir, fill with reverse osmosis water, and feed with
quality hydroponics base nutrients. When I say “quality hydroponics nutrients,” I mean a reliable
brand of hydroponics base nutrients other than the brand you were using when the nutrients deficiency
occurred.

You can also experiment with slight up and down adjustments of nutrients strength (ppm) or nutrients
water pH and see if that corrects the problems. For example, many of us follow the dosage instructions
on nutrients bottles and end up with 500+ ppm during flowering. In some cases, that’s too much, and what’s
really strange is that using too much nutrients can result in nutrient deficiencies.

So try changing your dosage 50-100 ppm in either direction, and see if it makes a difference.
Try adjusting you pH from 6.2 to 6.0. Different nutrients interact with root zone material and
water differently, so that you might get absorption of 12 elements, but the pH is wrong for three
other ones. Even small adjustments in pH (unless you’re using pH Perfect base nutrients in which
case it doesn’t matter), can affect individual element’s absorption.

Looks like a sulfur deficiency. Adding some Epsom salt to your watering schedule at 1tsp per gallon should help. Maybe a little N Deficiency as well.