Dwc nutrient issue?

S

Smerkabewl

Member
Hey guys currently having this issue with 2 of my 4 plants. If you could give me some insight on what my issue could be that would be awesome! I did a 24 hour flush about a week ago and then added half the nutes I was using previously.

-newbie here so any tips will be helpful!

Ph-5.9
Water temp-65
Humidity-62
Temp-70
 

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Yes,
Currently have the 4 dwc all connected in the tent under the kind led 750 running at 75% (24 inches away)

Running 5ml/gal of cal mag (ro water)

2ml/gallon of hydroguard

Advance nutrients grow A and B

A-3ml per gallon ( this is due to the fact I believe it is a nitrogen issue and A has 3.2% plus the 2.3? In cal mag .

B- 5ML/GAL

1ml/g of superthrive

Even though all my plants are connected 2 out of the 4 are having this issues. Other 2 look beautiful.

I'm week 6 of veg.

Overall I believe it is a nitrogen issue due to getting the claw a few weeks ago. I thought the flush would help the 2 plants but the past week they have gotten worse.

All the new growth is light green, curly and tacoing

These are regular seeds so I may get lucky and those end up being males but would still like to be able to diagnose the issue/learn for the future

Thank you!
 

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Are they all the same strain?
Fem or strait run beans?
Clones? From the same plant?

Connected DWC? Is there actual circulation between them?

Superthrive is SNAKE OIL! Don't need it and it won't help anything.

How do you add back?
Dump and refill on time?


Basically, new growth will look lighter green and kinda taco like.
Other then that, high N will look dark green and have shiny leaves....
You may hove gotten high N by improper add back (topping off).
 
Your temp is low and your humidity is too high for that temp.Try to get 80 F then the humidity will be right.You could also open the plants a bit,LST .Make sure you got good airflow.
 
Dr. Who said:
Are they all the same strain?
Fem or strait run beans?
Clones? From the same plant?

Connected DWC? Is there actual circulation between them?

Superthrive is SNAKE OIL! Don't need it and it won't help anything.

How do you add back?
Dump and refill on time?


Basically, new growth will look lighter green and kinda taco like.
Other then that, high N will look dark green and have shiny leaves....
You may hove gotten high N by improper add back (topping off).
Click to expand...


Same strain, reg seeds. I have tubing connecting them on the bottom allowing the water to flow through all 4.

I work in a cultivation center and was recommended to use the super thrive due to the issue I'm facing. Don't know much about the product.

I keep a 5 gal with extra water (same nutes as used when I do a water change, then use that to top them off for the week.

The reason I believe it is nitrogen is due to the fact I had a few leaves clawing 2 weeks ago and now this. I have 2 other plants (connected) that's new growth are beautiful .
 
myke said:
Your temp is low and your humidity is too high for that temp.Try to get 80 F then the humidity will be right.You could also open the plants a bit,LST .Make sure you got good airflow.
Click to expand...


I have clones going right now off these plants to find the sex. They should be showing within a few days. Once that is done I will be able to remove some plants and I'm assuming that would drop humdity a bit. I know the temps are a bit low (due to it being in the basement).
 
Let me state that I made a rookie mistake that I believe started all of this... I was having calcium issues in the beginning and decided to add more cal mag DIRECTLY into the buckets. (3 weeks ago) I believe that since my root system is so big a majority of the cal mag got absorbed by the roots directly instead of it being diluted into the water
 
Smerkabewl said:
I have clones going right now off these plants to find the sex. They should be showing within a few days. Once that is done I will be able to remove some plants and I'm assuming that would drop humdity a bit. I know the temps are a bit low (due to it being in the basement).
Click to expand...

This guy is full of it!

If that liquid temp hits 70 or more. You will discover the joys of root rot!

You over reacted at a little minor "claw". I suspect the following is why it clawed (and yes, your N was getting high)...

You need to add back a less then 100% solution when adding back (topping off).

Use a 33% solution to top off. Mix 2 gallons of straight water to 1 gallon of 100% solution and you have your 33%.

Now then, this is important now. I have several thing's to say here, on the different problems your doing....

When you fill the res for the first time. You remember how much it took to fill it in total.
Now as the res solution gets used and you add back or top off - use that 33% solution BUT, remember how much you top off with every time.
Once the amount your about to add back will equal the amount of solution you used to fill the res to start with....
STOP, dump the res and refill with 100% solution and start the whole thing over.
Same for Veg and bloom!

Now then, the other part of the story.
If you do not have a pump circulating between all 4 buckets.... Disconnect them and let them be each a stand alone bucket!

Why?
If you don't add back in each bucket...You'r getting an unbalanced (or unequal) NPK value in them.
This alone could account for your uneven plant problems.. This could lead to a possible pH issue down the road too.

That is why there is RDWC (Recirculating Deep Water Culture) for connected buckets!

As far as the 100% vs 33% add back. The plant uses "about" 33% of the nutrient available in that solution. By adding back 100% solution. You can over feed something rather quick (so to say).
The other point on this situation, is that the plant also puts back waste compounds into that res solution. This is why over time you would see a rising ppm count in the res.

Dumping and refilling, removes that plant waste. if you don't? Very easy to get pH issues and blocking etc. This can,,,kill the plant in extreme case's. (not being aware of it and not taking care of it).

Questions?
Feel free to ask away...

good luck
 
Dr. Who said:
This guy is full of it!

If that liquid temp hits 70 or more. You will discover the joys of root rot!

You over reacted at a little minor "claw". I suspect the following is why it clawed (and yes, your N was getting high)...

You need to add back a less then 100% solution when adding back (topping off).

Use a 33% solution to top off. Mix 2 gallons of straight water to 1 gallon of 100% solution and you have your 33%.

Now then, this is important now. I have several thing's to say here, on the different problems your doing....

When you fill the res for the first time. You remember how much it took to fill it in total.
Now as the res solution gets used and you add back or top off - use that 33% solution BUT, remember how much you top off with every time.
Once the amount your about to add back will equal the amount of solution you used to fill the res to start with....
STOP, dump the res and refill with 100% solution and start the whole thing over.
Same for Veg and bloom!

Now then, the other part of the story.
If you do not have a pump circulating between all 4 buckets.... Disconnect them and let them be each a stand alone bucket!

Why?
If you don't add back in each bucket...You'r getting an unbalanced (or unequal) NPK value in them.
This alone could account for your uneven plant problems.. This could lead to a possible pH issue down the road too.

That is why there is RDWC (Recirculating Deep Water Culture) for connected buckets!

As far as the 100% vs 33% add back. The plant uses "about" 33% of the nutrient available in that solution. By adding back 100% solution. You can over feed something rather quick (so to say).
The other point on this situation, is that the plant also puts back waste compounds into that res solution. This is why over time you would see a rising ppm count in the res.

Dumping and refilling, removes that plant waste. if you don't? Very easy to get pH issues and blocking etc. This can,,,kill the plant in extreme case's. (not being aware of it and not taking care of it).

Questions?
Feel free to ask away...

good luck
Click to expand...

Currently what I am doing is changing the water weekly and then cleaning every 2 weeks. During the week when the water gets low I top it with same amount of nutes as I did beginning of the week. (Premade mix that was made same time water was changed)

I do have a pump in each of the 4 buckets. ( I wish I did not connect them all due to it being a pain in the ass, dude at the hydro store recommend it.)

Do u think this system works?

Since this is my first grow I believe my biggest challenge is finding out the balance between with the nutes.
 
rkymtnman said:
i

i'd find an online nute calculator in put in your amounts for A and B and cal/mg and see what your elemental ppms are for NPKCaMg.
Click to expand...

All I can find for a nute calculator is one made by the companies ( obviously with this they are recommend to use all of their products in the line up). Do u know anywhere that I can simple input what products I'm ACTUALLY using and it will give me the correct equation?
 
Dr. Who said:
This guy is full of it!

If that liquid temp hits 70 or more. You will discover the joys of root rot!

You over reacted at a little minor "claw". I suspect the following is why it clawed (and yes, your N was getting high)...

You need to add back a less then 100% solution when adding back (topping off).

Use a 33% solution to top off. Mix 2 gallons of straight water to 1 gallon of 100% solution and you have your 33%.

Now then, this is important now. I have several thing's to say here, on the different problems your doing....

When you fill the res for the first time. You remember how much it took to fill it in total.
Now as the res solution gets used and you add back or top off - use that 33% solution BUT, remember how much you top off with every time.
Once the amount your about to add back will equal the amount of solution you used to fill the res to start with....
STOP, dump the res and refill with 100% solution and start the whole thing over.
Same for Veg and bloom!

Now then, the other part of the story.
If you do not have a pump circulating between all 4 buckets.... Disconnect them and let them be each a stand alone bucket!

Why?
If you don't add back in each bucket...You'r getting an unbalanced (or unequal) NPK value in them.
This alone could account for your uneven plant problems.. This could lead to a possible pH issue down the road too.

That is why there is RDWC (Recirculating Deep Water Culture) for connected buckets!

As far as the 100% vs 33% add back. The plant uses "about" 33% of the nutrient available in that solution. By adding back 100% solution. You can over feed something rather quick (so to say).
The other point on this situation, is that the plant also puts back waste compounds into that res solution. This is why over time you would see a rising ppm count in the res.

Dumping and refilling, removes that plant waste. if you don't? Very easy to get pH issues and blocking etc. This can,,,kill the plant in extreme case's. (not being aware of it and not taking care of it).

Questions?
Feel free to ask away...

good luck
Click to expand...

Overall, do you believe I am having nitrogen toxicity issues? If so how would I go about that being that I am in week 6 of veg and plan to flip at week 8? I can try another 24 hours flush if needed, that process takes some time though due to my RO water coming out at a slow pace
 
Smerkabewl said:
All I can find for a nute calculator is one made by the companies ( obviously with this they are recommend to use all of their products in the line up). Do u know anywhere that I can simple input what products I'm ACTUALLY using and it will give me the correct equation?
Click to expand...

towards the bottom, pretty straight forward. just need the labels off each bottle and how much you use:

CannaStats - Nutrient Profiles for Cannabis

This page provides a common language spoken by all fertilizer solutions and a way to mix them for growing cannabis hydroponically. Sometimes referred to as the Lucas formula, this page explains the true origin of this well known proven formula and the project that led to its discovery. Emphasis...
www.angelfire.com
 
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