New grower needs HELP! Tiny yellow speck

Hi everyone!

Im a new grower. I have a 4 week old Gelato baby in a 24x24x48 grow tent, with 400w UFO LEDs . I use liquid nutes PPM reading at 600 last feeding and ph at 6.2.

So some days ago I noticed some of the upper leaves had small waxy looking color-lacking blemishes, which went away. But then noticed a tiny yellow spot on one of the the upper leaves and some browning on one of the lower leaves.

Now the newer leaves at the top started to show slight browning at the tips.

Any idea whats wrong and how to fix it??

Thanks in advance for helping!!

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@Skydiver @garrigan62

Welcome to ilgm35516 35513


If new growth is being affected and your ph and temps are where they are suppose to be I’d wager to say you have the beginning of a calcium deficiency or nute burn. Leaves are deep green making me think it’s running rich in nitrogen

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Mm I see. Any idea how to tackle this?

Thanks for helping!


Welcome to our world of growing here at ILGM and to the most awesome community’s on the net today.

What’s going on is " NIUTRIENT BURN " You stated that the tips are starting to turn brown and see how dark green the leaves are, that’s a sure sign of Nutrient Buren

Here are a couple of pic’s showing the very same thing

See how the leaves drop over and how dark green they are. HERE IS WHAT TO DO

The reason for this is, because a newer grower will use a chemical nutrient
most of the time and listen to the directions on the box. This is a NO NO!
Depending on the age of the plant, size, strain and soil mixture you are using
also has a factor. There is no set guideline when using nutrients, but I can
give you a good example to start out with so you will not burn your plants.
It’s always good to start out light, rather than feed heavy. Remember you can
always add more later, but can not take out when you added to much. Chemical
and Organic nutrients differ. Chemical nutrients are more readily available
and can burn way easier than organics can. Organics are easier for a newer
grower to use, most of the time, and lessen your chances of burning your plants.
I recommend not using more than ½ teaspoon of chemical nutrients per gallon
of water. Unless the plants are very big 5 feet+, then it’s safe to use 1
teaspoon per gallon of water. When your plants first emerge you want to wait
at least 2 weeks before feeding your plants, unless your plants are in a soiless
mixture, like pro mix. The cotyledons (its first set of round looking leaves) are
what give the plant its food until they get the first 2 or 3 sets of leaves. If
your plants are in a soiless mixture and are over the first week of age; you can
feed a weak amount of nutrients, like ÂĽ teaspoon per gallon of water. Soiless
mixtures are different from soil plants and soiless plants need to be fed more
when using this mixture.

I also recommend not feeding more than 1 time a week if using ½ teaspoon per
gallon of water for chemical nutrients. You can feed every other day,( this
goes for chemical and organics) at very weak amounts, but doing this may contribute
to over watering, and for that I do not recommend feeding more than once a week.
Some people feed 2 times a week using like ¼ teaspoon per gallon of water… Use 1/4
strength for first feeding and then go up to 1/2 strength from the 2nd feeding when
using chemical nutrients. It’s very easy to overdo it. When using organics, depending
on which one you’re using, I recommend using 1 teaspoon per gallon of water. When the
plant gets bigger you can work your way up to using more nutrients when the plants
get bigger.

As for soil mixtures, there are a lot of different kinds of soil’s out there. Using a
rich soil mixture is not recommended for seedlings. Seedlings that are under 2
weeks of age you do not want to start them in rich soil, using a seed starter
mixture is one of the safer ways. Seed starter mixtures are weak in nutrients,
so it will not burn the seedlings but will provide them enough to get past seedling
stage, but the downside is you have to transplant into a better soil mixture after 2
weeks of age. If you decide to start with this mixture, do not put your seedlings
into a big pot. Start them out with using a cup or a small pot.

Nutrient Burn causes leaf tips to appear yellow or burnt. They can also be brown
and twisted and crispy looking. Depending on the severity it can show many different
symptoms and shows on lower part of the plant when its young, at older stages it
can move anywhere on the plant. The burn will creep into the center of the leaf
causing it to curl and dry up. It depends on the specific nutrient that is in excess.
For example, too much nitrogen causes leaves to curl downwards and too much potassium
creates brown spots near the edge of the leaf. Either way, nutrient burn may potentially
kill your plant or lead to it having a strong chemical taste.

To fix the problem when you have Nutrient burn, you want to flush out the plants
with lots of water.


Soil should be flushed with lots of water, Use 3 gallons of water per one gallon of soil.
Flush very thoroughly, after plant recovers usually after a week, you can resume using
nutrients after a week or a week 1/2. When you flush your soil, you flush everything out,
a lot of nutrients go with it, including the soil nutrients.

Hydro `````````````````
Change out the reservoir, flush out any lines and clean out the entire system and
replace with plain water for the first hour, then start out with lower parts per
million (PPM)
Its good to clean out your system every 2 weeks and replace with fresh water and
nutrients. Some people change everything every week!

Ahh, nute burn! Stop this by not adding to much chemical/organic nutrients to your
water,foliar feeding. DONT feed more than 1 time a week unless using weak amount,
use 1/4 strength for first feeding and then go up to 1/2 strength from then on when
using chemical nutrients. Its very easy to overdo it. Causes leaf tips to appear
yellow or burnt. NEVER give nutrients to plants that are under 2 weeks of age, at
this age the soil nutrients are enough to suppliment them untill 2 weeks of age or
more depending on how good your soil is. Using ferts before 2 weeks will almost
likley kill your plants.


Agree with above. The dark shiny leaves are signs of nitrogen toxicity. Your feed was 600ppm but did you measure what came out of it? What kind of medium are you using?

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Thanks for the tips and helpful info. Inwill be flushing my plants tomorrow hopefully there was not much damage done. :raised_hands:t4:

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I did not test ppm for my run off. But did test the ph came out at 5.8. I use soil and floranova grow for feeding. I did follow the label’s instructions but I thought i was feeding the right amount at 600-650 ppm.

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If I walked into my tent tonight and those were in there looking like they do I would NOT be worried at all.
If you want perfect leaves get a plastic plant. Not trying to be difficult just that what I see even the dark green and a spot or 2 on 2 leafs is nothing that I would worry about.
Step back…take some time…see what they tell you tomorrow.
Things (good and bad) happen s-l-o-w-l-y growing in soil so I would wait a bit and see how she looks tomorrow and so on. If things are getting worse (and again I see nature’s beauty marks) than you’ll have to consider corrective action…then step back…look…listen and then make a plan and do it…plenty of time to step back and look.

You can flush them if you want and the advice from others above is good I just think you need to pause a minute… if it was me I’d wait a bit and be a Plant Detective


I do see your point. She has been healthy besides the small specks. I will flush and give her some time to see how things flow. Or give her some time and then flush…

I appreciate your advice and support!!

The reason I ask is your soil may already have nutrients in it. Your 600ppm isn’t bad but your soil may be holding 1000ppm. Agree with @Skydiver, no need to panic it’s just something to be mindful of.

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Why flush
I wouldn’t yet
Don’t see a reason but up to you
The less you fk with them (flush = raging downpour they have to deal with) the better they like you…lol
Step back tomorrow and instead of flushing smoke one…relax a watch her…she’ll talk to you

Sometimes we even splash some nutrient rich water on the leaves and they get burned. All good advice above, but as stated things happen slower in soil. I would wait also. Welcome to the forum @yocrezco

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Are you wanting to grow with living soil with critters bacteria, Fungi and all the others that do the heavy work or will you be using salt based nutrients? How do you wanna grow?

I would just do a plain water next time Ph to middle around 6.5

Thanks for the advice man! I guess I kinda panicked and had no idea what to do. I do see some things more clearer now…

Well I used a premixed soil but I added fish sh!t to it, an organic a soil conditioner which adds living bacteria to the medium. Also neemed the plant maybe that has something to do?

Yea Neem has some nitrogen.
Did you top dress dry Neem meal or use Neem oil in a spray?
If you wanna keep the critters alive check your liquid nutrient line you have to see what the heck it is as far as organic or salt based. A lot of liquid stuff out there isn’t organic not saying what your using isn’t I just don’t know.
You’ll want to look at brewing some teas for her too

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My plain water reads at 100 ppm. Is that high enough as to burn? Thanks for the advice and the welcome. Much appreciated! @Holmes

I used neem oil in a spray but some of the specks were already there… Regarding my nutrient line, Floranova Grow, this is what I’ve been able to find:

Super concentrated and pH stabilized. It contains natural humic acids for better nutrient absorption. Derived From: Ammonium Molybdate, Ammonium Phosphate, Calcium Nitrate, Potassium Nitrate, Potassium Phosphate, Potassium Borate, Magnesium Sulfate, Cobalt Sulfate, Copper Sulfate, Manganese Sulfate, Zinc Sulfate, Iron DTPA.

Total Nitrogen (N) 7%
Nitrogen made up of: 0.9% Ammonical Nitrogen and 6.1% Nitrate Nitrogen
Available Phosphate (P2O5) 4%
Soluble Potash (K2O) 10%
Calcium (Ca) 4%
Water Soluble Magnesium (Mg) 1.5%
Sulfur (S) 2%
Chelated Iron (Fe) 0.1%

Sorry for the delay had to wait 24 hrs!!

Your tap water is fine at 100ppm
I think Flora Nova Grow is a salt based nutrient line and not considered organic as such.
Don’t know much on General Hydroponics lines as I don’t use it.

Thats good to know!!
Yes, I think you’re right. I will definitely look into and consider brewing tea for future grows. But I thought it was very time consuming etc…