Nitrogen?

I have posted before about this little one but i am so convinced that something is not right. i think she needs a little bit of nitrogen as she is very waxy and shiny, She is growing very bushy and not very many budding sites (if any) I have taken some pictures, the leaves on the floor is drying out on purpose (easier to get rid of when dry).

blueberry cheese auto
In coco pro plus 5.8ph - run off 5.6
Canna a & b 2ml per litre
4 weeks old from seed

I have just ordered some nitrogen but i have said a couple of times i think there might be a problem as some said its because she is young but as the days go on and really given her a good check all over i do not think she will make it like her sister (see pic 7). Found a leaf at the bottom (pic .
Nitrogen deficiency? She is not growing as i thought she would.

First time growing auto's so feel like i am back to square 1 learning again from scratch. Any advice would be a help please,

Thanks Guys

The reason leaves are “ waxy / shiny “ is it is nitrogen excess. It is showing N Tox - dark leaf.

You are giving it too much.

Excessive nitrogen can and does interfere with normal flower formation ( malformation ) etc.

Too much nitrogen affects plant quality because it negatively impacts photosynthesis. Excess nitrogen in cannabis plants will prevent the correct formation of buds, reduce both yields and potency and can cause inferior buds.

Symptoms of excess nitrogen include thickened and sometimes cupped leaves with atypically deep green color. Overfertilization can cause leaves to turn brown, gray, dark green, or yellow at margins and tips or overall. Affected foliage may wilt temporarily or die and drop prematurely.

Budzbuddha said:

Excessive nitrogen can and does interfere with normal flower formation ( malformation ) etc.

Too much nitrogen affects plant quality because it negatively impacts photosynthesis. Excess nitrogen in cannabis plants will prevent the correct formation of buds, reduce both yields and potency and can cause inferior buds.

Symptoms of excess nitrogen include thickened and sometimes cupped leaves with atypically deep green color. Overfertilization can cause leaves to turn brown, gray, dark green, or yellow at margins and tips or overall. Affected foliage may wilt temporarily or die and drop prematurely.

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Thank you so much for your advice, she is a auto so what will happen. .... she is on day 3 with no feed, i thought she needed nitrogen so i ordered some last night and it is coming today. I have canna flush here so feed her flush (what ratio should i use as she is a auto?) and ph of 5.8?
I have only ever used canna a and b with no other nutes so how has this happened? is it just random or have i done something wrong? i have never used E.C could this be the problem?

do i flush every day or a good flush today and leave for a week? if so how many litres should i give her ? when do you think she will start to show improvement after flushing?

Ripen said:

Are you giving equal amounts of A and B or are you following some genius' feedingprogram?
What are your temps?
Flush once until EC is low, then feed.

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Hi,

Yes equal amounts of a & b feeding once every 2/3 days temps.... in tent (avg 25/27 humidity is 49% or the feed (never checked before)
gonna flush now do you think 6ltr's will be enough?

Having an EC meter never hurts, it will give you solid data as your growing experience expands.
I generated this chart using 0.3 EC starting water and using 2ml each per liter does not seem high at all for total EC.
I feel the CANNA formula is too high in N to begin with, with a total NPK of 5-4-3. Years ago I ran H&G and their combined NPK was 4-3-8.
I personally wouldn't try to flush, but reduce the N in the solution instead. Lower the high N portion to 1ml per liter (is the part A 4-0-1?)
....and fudge CANNA, another nutrient site that doesn't make their ingredients easily downloaded.
Hopefully the micros are in part B.


The guidelines in the table aren‘t an iron law, but can help novice growers to develop a sophisticated fertilisation strategy. The optimum fertilisation strategy is further determined by factors such as: temperature, humidity, plant species, root volume, moisture percentage in substrate, water dosage strategy, etc.

Based on the color, the last thing you want to do is to give it more nitrogen.

jwilk02 said:

Hi,

Yes equal amounts of a & b feeding once every 2/3 days temps.... in tent (avg 25/27 humidity is 49% or the feed (never checked before)
gonna flush now do you think 6ltr's will be enough?

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A n B are base feeding Nutes. Past week 3 imo, the only time I'd use them again is at flush. in a case where you find your N high the best thing to do is do a flush esp if the medium is Hydro... soil takes a bit longer to see the corrections...but for future reference I'd recommend a 3 part feeding schedule. Foxfarm for example has a product for each phase base, veg, bloom and flower... with the parts per gallon right on the label. you can tweak to your own liking but following the label will always be pretty safe. You have to measure EC and PH daily..esp PH...staying at 5.5- to < 6.0 seems like a pretty sweet spot where if you have a deficiency creep in it will be very slow and noticeable. Soil is tougher bc chemicals are more persistent in soil. Remember when you flush not all chems one at the same speed. so you also risk taking some good with the bad that's why ph is so important bc it ties directly to nutrient uptake. grab a PH chart that tells you what moves best at specific PH readings. Get a pool test kit if you want to avoid worrying about calibration of the meters.i personally love gadgets but the tube and 3 or 4 drops of ph indicator in your test (water/ run off) subject always seems more accurate to me.

also a shot of cal mag helps keep the plant in balance. and mycorrhizae (root inoculant) helps keep your roots health with beneficial bacteria.
it'll stop a lot of the imbalance problems to begin with.
fox farm beastie blooms, open sesame, and cha-chin (look at the NPK numbers on each) you don't have to buy, but the numbers show you
ratios at specific phases of your grow cycle.