And the diagnosis is.......??

chojin · Dec 5, 2015

Howdy there people.
My little one has been going quite well, however, opened my box up 2 days ago and noticed she is ;looking a bit stressed.
Here be some info:

Growing under CFLs & LED
Soil medium.
3 water to 1 (5-0-0) watering cycle
PH around 6 - 6.6
plenty of air circulating.

She is in a small pot and about to transplant her to a bigger one.
Notice how the 3rd tier from the bottom are looking quite stress while the others show only a little discolouration, if anything at all.

Appreciate your diagnosis and advice on this one.

apbx720 · Dec 5, 2015

What exactly are u feeding? Just N? She may be hungry. Transplant into bigger pot. Fresh soil and fresh pure ro water. This will not hurt. Wait a fews days to see if conditions improve.

az2000 · Dec 5, 2015

You need a more balanced fertilizer than 5-0-0. What motivated you to choose that one?

az2000 · Dec 5, 2015

chojin said:
3 water to 1 (5-0-0) watering cycle

Are you saying you use 750ml water and 250ml of that nitrogen product? My calculations (which are known to be off, but not this much) say that's 10,000ppm strength (not counting whatever ppms are in your water. If you're in Europe, that's EC 20.).

Something doesn't make sense because nothing should grow in that.

If you picked up a $6 US box of MiracelGro Tomato (18-18-21) you could use 1 gram of that with your 1.5ml of your 5-0-0 product. That would create the equivalent of a 9.6-7.2-8.4 product. That's a reasonable NPK ratio 1.33-1-1.17 and 638ppms in 1 liter. (EC 1.28 )

chojin · Dec 5, 2015

az2000 said:
Are you saying you use 750ml water and 250ml of that nitrogen product? My calculations (which are known to be off, but not this much) say that's 10,000ppm strength (not counting whatever ppms are in your water. If you're in Europe, that's EC 20.).

Something doesn't make sense because nothing should grow in that.

If you picked up a $6 US box of MiracelGro Tomato (18-18-21) you could use 1 gram of that with your 1.5ml of your 5-0-0 product. That would create the equivalent of a 9.6-7.2-8.4 product. That's a reasonable NPK ratio 1.33-1-1.17 and 638ppms in 1 liter. (EC 1.28 )

No, thats not what I'm saying bro. Thats just my cycle for watering. 3 times of water, then one of 5-0-0.
Using the 5-0-0 just to give her a better oxygen intake.
I am growing in a soil medium that I believe is some what pre-fertilised.

In the land of the rising sun and finding the exact same nutrients as suggested a little hard to find.
I do however have some 6-6-6 that I bought.
Would you recommend mixing some of the 5-0-0 with the 6-6-6 and if so, what ratio?
She is approx. 4.5 weeks in from sprouting.

Thanks for your help

chojin · Dec 5, 2015

apbx720 said:
What exactly are u feeding? Just N? She may be hungry. Transplant into bigger pot. Fresh soil and fresh pure ro water. This will not hurt. Wait a fews days to see if conditions improve.

Feeding her just water and an 5-0-0 for oxygen intake every 4th water.
In a pre-fertilised soil with PH of 5-6.
I potted her into a bigger pot last night.
I am going to leave her for a couple of days, not even look at her, then see how she has come along.

Please note, this is my first grow, in the middle of a dank ass cold winter, in a place where I cannot get all the well known brands people recommend.

Peez

Bdoggg · Dec 5, 2015

You should water it once then give it a good shot of nutrients. Looks to me like a Phosphorous deficiency

az2000 · Dec 5, 2015

chojin said:
I do however have some 6-6-6 that I bought.
Would you recommend mixing some of the 5-0-0 with the 6-6-6 and if so, what ratio?

In the US fertilizers are listed as "percent of weight." So, 6-6-6 means 6% of a 1kg product is 60g. It's a little more complicated because PK are referred to as P205 and K2O (i.e., 60g of those, not elemental P and K). Some countries label things % volume/volume. (And, they may refer to elemental P & K, I don't know. But, that would change how we talk about ratios -- considerably.).

So, assuming your 5-0-0 and 6-6-6 are US-style labels, 1g and 3g (respectively) mixed together is 1.28-1-1 and 590 ppm in 1 liter of water. That could be a little strong. I would reduce both 30%. (Also, since I can't see the labels, the PPMs would be higher due to the micro nutrients. I'm just going by N, P2O5 and K2O.).

It would be nice if you could up the K a little. If you have chemistry suppliers you might find some potassium sulfate (K2SO4). That's 50% K by weight (17% sulfur). A smidge of that would be nice (take it up to 1.28-1-1.5).

Anything will work. If you can find something higher in K, you could mix it in. The think you want to verify is if the products sold there are %w/w or %v/v. And, if PK is listed as P2O5 and K2O, like the US. Make sure we're speaking the same language.

I use this spreadsheet to figure out those things. You can do it yourself. (It's safe, no macros.). If your products are %v/v, you could make a spreadsheet to convert them to %w/w. I've thought about doing that. I don't know how common %v/v is. Waiting for someone to need it.

Do you have a TDS/PPM meter? (sometimes called EC meter?). The dissolved salts in your water might affect your grow. It's really common to have high TDS which interferes with the nutes. That's a basic thing to find out. Your water provider should know.

EDIT: If you don't want to get into all the minutia I'm talking about, using the 6-6-6 would be a huge improvement. Like bdogg said, it would help that problem immediately. What I'm talking about is fine tuning things. You don't have to do that. I wouldn't let perfection be the enemy of good.

chojin · Dec 5, 2015

az2000 said:
In the US fertilizers are listed as "percent of weight." So, 6-6-6 means 6% of a 1kg product is 60g. It's a little more complicated because PK are referred to as P205 and K2O (i.e., 60g of those, not elemental P and K). Some countries label things % volume/volume. (And, they may refer to elemental P & K, I don't know. But, that would change how we talk about ratios -- considerably.).

az200, if we are speaking the same language, you are a wordsmith and I am but at peasant kindergartener.
First grow on a budget and although my Japanese is good, at present, the time involved translating everything and trying to find something exactly suitable may be a bit difficult.
I definitely will take on board your advice and begin looking into things.

I mixed up some of the 6-6-6 as instructed on the bottle (1-500= 1 ml-500ml) and added just a touch of 5-0-0 (mixing ratio 1ml-500ml, about mixed it in with a 1ml to 1500ml ratio to dilute it

Tonight I will mix up some of the 6-6-6 and give her some when she dries up.
I am watering with a spray bottle and only until she is about 2nd knuckle deep when I put my finger in the top soil.
(I know, I should get a meter for that, but I am on a budget and a schedule that doesn't allow me to get out and shop around)

Will see how she goes and put some pics up.

I did think is was interesting that the bottom leaves didn't have this problem, and the set just above them showed some minor discolouration.

Thanks for your help.

apbx720 · Dec 5, 2015

chojin said:
Feeding her just water and an 5-0-0 for oxygen intake every 4th water.
In a pre-fertilised soil with PH of 5-6.
I potted her into a bigger pot last night.
I am going to leave her for a couple of days, not even look at her, then see how she has come along.

Please note, this is my first grow, in the middle of a dank ass cold winter, in a place where I cannot get all the well known brands people recommend.

Peez

Ya good idea. give the plant a few days to start taking in nutes from the new dirt. If you transplanted correctly, and did not stress the rootball too much, then you will see improvement over the next few days to a week. Look for healthy new growth to guage improvement. The older dead leaves will most likely not heal. Thats ok. If you dont see improvement i would suspect ph problem. Idk what kinda soil yr in but if its good organic soil it will most likely balance itself if provided quality water

And the diagnosis is.......??

chojin

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chojin

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