Nitrogen toxicity! Questions. Will flushing be enough? Is transplant needed?

I

iBloom

Active Member
Hello all,

I've came along what I believe to be a case of nitrogen toxicity among my grow. I used blood meal in the soil, and as well gave it a liquid feed of a base and a couple additives that had nitrogen in them. This was obviously way to much nitrogen for them, and I'm going to have to flush them. How badly do you think it is going to affect the overall health of the plant, and what steps must I take to properly fix this problem?

Thanks all,

IMG_0978.jpgIMG_0977.jpgIMG_0975.jpgIMG_0957.jpgIMG_0956.jpgIMG_0955.jpgIMG_0954.jpg
 
I

iBloom

Active Member
Last feed I gave them was 1/4 of recommended dosage so they were, but what happened was I made a batch of soil and added blood meal. I just added to many nutrients I believe, as you can see, and was wondering if I needed to flush and how I would go about doing that.
 
Uncle Ben

Uncle Ben

Well-Known Member
iBloom said:
Hello all,

I've came along what I believe to be a case of nitrogen toxicity among my grow. I used blood meal in the soil, and as well gave it a liquid feed of a base and a couple additives that had nitrogen in them. This was obviously way to much nitrogen for them, and I'm going to have to flush them. How badly do you think it is going to affect the overall health of the plant, and what steps must I take to properly fix this problem?

Thanks all,

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I wouldn't worry about it, looks fine to me. What exactly have you been feeding them, what rate and what frequency? No product names please. I only work with NPK values, labels showing an analysis is fine.

Also, a photo under a HPS is worthless to someone trying to read your plants.

UB
 
MYOB

MYOB

Well-Known Member
The leaf in the third pic looks an unhealthy shade of green. The droopy leaves also indicate N toxicity.

You should know the NPK values of what you are adding as fertilizer. Too much is not a good thing.

I would flush them, give them plain water after that until the leaves perk up again. Then feed them a balanced fertilizer at a moderate/low dosage.
 
Jimdamick

Jimdamick

Well-Known Member
What I do if I have to flush pots is I get 2-5 gal buckets and in one I put my flush solution and a small aquarium pump. I place the pot to be flushed on top of the empty bucket on 2 pieces of wood laying across the top to support the pot. Then using a piece of tubing to pump the solution through the tubing to the pot on top of the empty bucket and away you go. UB seems to be correct again though, in that your leaves don't appear to be nitro burned. Good luck.
 
xGrimace

xGrimace

Well-Known Member
This happened to my plant, but I thought it was too dry and got burned, but didnt think too much about it, and it all went back to normal within a week. The leaves died off though about 20.
 
I

iBloom

Active Member
Uncle Ben said:
I wouldn't worry about it, looks fine to me. What exactly have you been feeding them, what rate and what frequency? No product names please. I only work with NPK values, labels showing an analysis is fine.

Also, a photo under a HPS is worthless to someone trying to read your plants.

UB
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Hello UB,

Thanks for the reply, and sorry for the HPS pic only one I could get. I'll try and have on when lights are out so you can have a better look at them. The rate at which i've been feeding is 2 waterings followed by a feeding at 25% recommended dosage; the reduction applies to everything i've been giving them which is:
IMG_0981.jpgIMG_0980.jpgIMG_0979.jpgIMG_0984.jpgIMG_0983.jpgIMG_0982.jpg

Along with this I added 3 cups of blood meal, 2 cups of Jamaican bat guano, and 1 cup of a sulfur soil acidifier in the soil mix I made to help maintain pH. I'm thinking 3 cups of the blood meal might have been a little to much, or I was just impatient with the time release and the plants got a huge dose of nitrogen.
 
F

Fresh 2 De@th

Well-Known Member
that does not look fine. if you have to, flush, but if you're not into flushing, i suggest watering until you get a decent amount of runoff and foliar with plain water throughout the day. that should help use a lot of that N up.

also, looks like you have a cal issue too.
 
I

iBloom

Active Member
Fresh 2 De@th said:
that does not look fine. if you have to, flush, but if you're not into flushing, i suggest watering until you get a decent amount of runoff and foliar with plain water throughout the day. that should help use a lot of that N up.

also, looks like you have a cal issue too.
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That's what I did today, we put a tarp down and watered until we had some significant runoff. Plants responded almost immediately it seems like as they look like they've already got a little light greener.
 
Uncle Ben

Uncle Ben

Well-Known Member
iBloom said:
Hello UB,

Thanks for the reply, and sorry for the HPS pic only one I could get. I'll try and have on when lights are out so you can have a better look at them. The rate at which i've been feeding is 2 waterings followed by a feeding at 25% recommended dosage; the reduction applies to everything i've been giving them which is:
View attachment 2690500View attachment 2690499View attachment 2690498View attachment 2690505View attachment 2690503View attachment 2690502

Along with this I added 3 cups of blood meal, 2 cups of Jamaican bat guano, and 1 cup of a sulfur soil acidifier in the soil mix I made to help maintain pH. I'm thinking 3 cups of the blood meal might have been a little to much, or I was just impatient with the time release and the plants got a huge dose of nitrogen.
Click to expand...
That's a lot of 'stuff'. "3 cups of blood meal, 2 cups of Jamaican bat guano, and 1 cup of a sulfur soil acidifier in the soil mix" to how much soil? I wouldn't put that much blood meal in less than 20 gallons of mix. It looks like you're throwing a lot of stuff at your plants hoping "something sticks". It's the final NPK that counts and based on what you've posted, I can't begin to guess. No doubt that the entire salts content is quite high. FWIW, even though blood meal is a slow release (must first be converted to nitrates by microbial activity) it is pretty quick and can be "hot". Again, I don't think they look that bad but then again, I'm a N freak when it comes to cannabis. Cannabis is a tropical foliage plant and needs quite a bit of N to produce and retain leaves, and that includes during flowering.

I often push Dyna Gro because it's very high quality, cheap, one shot does it all (it's complete) and the Foliage Pro from start to finish in a regular soil mix without all the additives is all you need.

You could flush by sinking your pots in a sink full of water and watering from the bottom up which means the water level outside of the pot needs to be almost to the top of the pot. When you see the water level rise within the pot above the soil via the drainholes, you can then pull it and let it drain. Rainwater is best. Do it all the time because it assures me that I have no dry spots or channels in the soil. Use the tea on your veggie garden or such.


UB
 
I

iBloom

Active Member
Uncle Ben said:
That's a lot of 'stuff'. "3 cups of blood meal, 2 cups of Jamaican bat guano, and 1 cup of a sulfur soil acidifier in the soil mix" to how much soil? I wouldn't put that much blood meal in less than 20 gallons of mix. It looks like you're throwing a lot of stuff at your plants hoping "something sticks". It's the final NPK that counts and based on what you've posted, I can't begin to guess. No doubt that the entire salts content is quite high. FWIW, even though blood meal is a slow release (must first be converted to nitrates by microbial activity) it is pretty quick and can be "hot". Again, I don't think they look that bad but then again, I'm a N freak when it comes to cannabis. Cannabis is a tropical foliage plant and needs quite a bit of N to produce and retain leaves, and that includes during flowering.

I often push Dyna Gro because it's very high quality, cheap, one shot does it all (it's complete) and the Foliage Pro from start to finish in a regular soil mix without all the additives is all you need.

You could flush by sinking your pots in a sink full of water and watering from the bottom up which means the water level outside of the pot needs to be almost to the top of the pot. When you see the water level rise within the pot above the soil via the drainholes, you can then pull it and let it drain. Rainwater is best. Do it all the time because it assures me that I have no dry spots or channels in the soil. Use the tea on your veggie garden or such.


UB
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  • In regards to blood meal the amount of soil was about 25 gallons. I had to fill 8 seven gallon pots and made two batches using the same make up for each. Over night I drenched the plants until there was some heavy run off I'm thinking I cleared some of the nitrogen out. The plants responded immediately already picked back up growing and have gained that nice light healthy looking green from the darker black green they were. After adding the nutrient numbers up my overall N-P-K is 7.8-3.8-9.02 along with Ca 5.2, Mg 2.2, S 2.0, Fe 0.12, and Mn 0.05. I don't know if those are right. I'm currently giving them 1/4 of the recommended dosage of what the label says to give it, so those could be reduced by .25. Unfortunately this was my first grow, and I failed to fully grasp nutrients before I purchased; that being the reason of my odd N-P-K, but I was checking out Homebrewer's side by side and I am definitely interested in Dynagro as it seems simple, cheap, and covers all your corners.​




 
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