Deficiency or nute burn?

shortarker99 said:

everything is stable as a big rock, havent seen any drift in pH since many weeks which is really bad as normally ph should increase

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Carbonates and bicarbonate in your source water will buffer ph and keep it from moving. Your tap water is probably high in at least one of them. They aren’t supposed to be super good for yield, that’s why people run reverse osmosis, but it’ll be fine for us now. The co2 could go off too, like @rkymtnman said. We’ll keep simplifying things until she gets healthy. Give us the pic of that fourth bottle and how about the name of the nutes. There’s got to be a web site we could check for mixing ratios.

rkymtnman said:

drop it to 0 would be my advice. for now at least

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It is a sealed room so that is not an option, I lowered it to 700 but i can go to 400

MustGro said:

Carbonates and bicarbonate in your source water will buffer ph and keep it from moving. Your tap water is probably high in at least one of them. They aren’t supposed to be super good for yield, that’s why people run reverse osmosis, but it’ll be fine for us now. The co2 could go off too, like @rkymtnman said. We’ll keep simplifying things until she gets healthy. Give us the pic of that fourth bottle and how about the name of the nutes. There’s got to be a web site we could check for mixing ratios.

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This is C.

Let me find the instructions and translate them

shortarker99 said:

It is a sealed room so that is not an option, I lowered it to 700 but i can go to 400

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400 is bueno for now. until they are OK

here is some homework for you:

here is your target goal in ppms. 100N-100P-200K-60Mg

there is a nute calculator at the bottom of this: fill in your %'s of NPKMg etc and try to come close to the 100/100/200/60

Let me say it I consider these instructions pretty useless

Pretty self explanatory:
Seedlings : 300 - 750 ppm
Vegetative: 750 - 1200 ppm
Flower: 750 - 1500 ppm

This ranges are fucking high in my opinion


Then, it says how to put each nutrient:
Basically shake and put 5 ml / 2 l water (which is a lot, i put 30 ml A for 60 liters)



Finally:

In seedling, 50% recommended dosage
Vegetative: A+B+D
Flowering: A+C+D

shortarker99 said:

I consider these instructions pretty useless

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wow! those numbers would melt the leaves on my plants. that's crazy high 3EC in flower????? no way.

try that nute calculator out. something like B and C you might need only like 0.5mL per gallon of water.

rkymtnman said:

wow! those numbers would melt the leaves on my plants. that's crazy high 3EC in flower????? no way.

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Some nute companies are like that. When I ran the gen hydro line they got up to 1650 ppm in week 5 of flower (3.3ec). With the FloraNova as a base I used to run up as high as 1750 in flower and never burned a tip. Stupid I know but some companies call for real high numbers in their charts.

MustGro said:

Some nute companies are like that. When I ran the gen hydro line they got up to 1650 ppm in week 5 of flower (3.3ec). With the FloraNova as a base I used to run up as high as 1750 in flower and never burned a tip. Stupid I know but some companies call for real high numbers in their charts.

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i'm at high elevation so i can't run anywhere near those #s. (8800 ft/ about 2900m)

rkymtnman said:

i'm at high elevation so i can't run anywhere near those #s. (8800 ft/ about 2900m)

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I don’t do it anymore either since I got myself educated on RIU. Waste of money and the plants are happier without it.
Right at sea level though so I guess that helped.

rkymtnman said:

try that nute calculator out. something like B and C you might need only like 0.5mL per gallon of water.

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Did my homework
First table is 1-1-1-1 relation
Second table is with adjusted factors to match this ratio: 122-99-171-68


So the factors are 0.6 - 0.15 - 0.2 - 0.5 which translates into 4 A/1 B/ 1.33 C/ 3.33 D. Seems legit?


Below the pictures of the calculator. Put 3.78 ml to convert to liters, Cant get used to gallons even though I work in oil and gas lol
Part A

Part B

Part C

Part D

Is that amount of calcium and sulfur ok?

shortarker99 said:

Is that amount of calcium and sulfur ok?

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Shit it’s too late at night for me to do math. Tomorrow would be better. I’m sure you did fine, you seem to give a fuck, that helps.

MustGro said:

Shit it’s too late at night for me to do math. Tomorrow would be better. I’m sure you did fine, you seem to give a fuck, that helps.

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what I mean is if the amount of calcium and sulfur that results from that combination is OK (orange column)

shortarker99 said:

what I mean is if the amount of calcium and sulfur that results from that combination is OK (orange column)
View attachment 4983712

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well done!!

that should be a really good ratio of everything. you want about a 2:1 ratio of Ca;Mg so you are close. Su should be fine too.

let's see what happens with that mix. and keep your CO2 at 400 for now. it will take a few days but you should start to see improvement soon.

Holy shit, it seems those % were really bad and that the seller doesn't know the difference between quantity and concetration.

So, apparently these are the good PPM for each component

I play a bit with some salt components to try to recreate the salts they use to double check the PPM table they provide.

Using this picture and the table below:


A: is Calcium Nitrate for sure and it matches the ratio

B1 & B2: I have no idea, i suspect they use Potassium nitrate & Potassium Monobasic but i cannot match the 425 ppm potassium, so im not really sure those numbers are OK

C1 and C2: potassium Sulfate (As there is present sulfur) and a mix of Potassium Monobasic/Dibasic Phosphate (To match K quantity)

D1: Epson salt for sure (matchs Mg/S relation) D2: rest of microcomponents which is not high priority for me right now

Upper table are the PPM of the solutions, lower table the factors to reach the golden ratio. Cannot get P higher as C

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So, with these new numbers, these are the new factors, it seems difficult to get high P. As B has lot of K it goes beyond 200 easily so no sense on using it.



Really different from the other calculation and now I realize why I had nitrogen toxicity in previous runs during flowering.

I will wait if the seller wants to give me the recipe he used for B.

Your thoughts? Really appreciate your help guys, thank you

If i simulate with those number the relation 1A-1B-1D i was using this are the results


So this appear to be very low P, which should't be a big concern in veg but also low K

Looking for K deficiency:





-----------------------------------------------------
Look again at my baby



And this is a coco one of mine, which has same problems




Maybe those PPM numbers are OK and i have K deficiency?

shortarker99 said:

If i simulate with those number the relation 1A-1B-1D i was using this are the results
View attachment 4983992

So this appear to be very low P, which should't be a big concern in veg but also low K

Looking for K deficiency:

How to fix Cannabis Potassium Deficiency (K) Pics & Symptoms

Leaves with a potassium deficiency have yellow, brown, or burnt edges and tips. It may look like nutrient burn, but the leaf margins also turn yellow.

www.growweedeasy.com

View attachment 4983993
View attachment 4983994

-----------------------------------------------------
Look again at my baby



And this is a coco one of mine, which has same problems




Maybe those PPM numbers are OK and i have K deficiency?

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I see what you’re saying, but those pics don‘t look K deficient to me. The leaf edges usually get burnt looking, not the whole leaf. You’d see a K deficiency in the new growth too. Here’s a pic of a K deficient plant of mine.

shortarker99 said:

If i simulate with those number the relation 1A-1B-1D i was using this are the results
View attachment 4983992

So this appear to be very low P, which should't be a big concern in veg but also low K

Looking for K deficiency:

How to fix Cannabis Potassium Deficiency (K) Pics & Symptoms

Leaves with a potassium deficiency have yellow, brown, or burnt edges and tips. It may look like nutrient burn, but the leaf margins also turn yellow.

www.growweedeasy.com

View attachment 4983993
View attachment 4983994

-----------------------------------------------------
Look again at my baby

View attachment 4983995

And this is a coco one of mine, which has same problems

View attachment 4983996


Maybe those PPM numbers are OK and i have K deficiency?

Click to expand...

i'm still almost positive it was nute burn which led to nute lockout.