day 16 flower, nitrogen "claw"?

Hydro Growers:
1. Are you growing from seed or clones? seed
2. How old are your plants? flowering 16 days, about 70 days total from seed
3. How tall are your plants? LST'd-- and about 2" tall (with the training)
4. What type of hydro system are you using? recirculating DWC
5. What brand/type of nutrients are you using? general hydroponic's maxigrow and maxibloom
6. What is the Ph of your nutrient solution? Currently about 5.9
7. What is the PPM/EC of your tap water? i use RO water, ppm around 25-50
8. What is the PPM/EC of your nutrient solution? Currently around 350
9. What is the temperature of your nutrient solution? 68 F
10. Does your PPM/EC show a rise or fall when you do your daily PPM check? Rise
11. Does your pH show a rise or fall when you do your daily check?Rise
12. Do you foliar feed or spray your plants with anything?Nope
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") 250w HPS, and some flourescent
14. How close are your lights to the plants? HPS good 8", flourescents are inches away
16. What is the temperature and humidity in your grow space? 75F during day, 70F at night, RH around 30%
17. Have you noticed any insect activity in your grow space? no
18. How much experience do you have growing? first time hydroponic, grown soil for a few years in the past


Only one of the plants is showing the claw, the other one is unaffected. Have been using just GH Maxigrow (grow nutrients) because I read that plants need a lot of nitrogen in the first two weeks of flowering, I haven't switched to Maxibloom yet.


Need help pleeeaaassee! it looks sad

whats the claw?

Quote:

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Originally Posted by beginerbuddah

whats the claw?

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look at the pictures. see the leaves that look like claws? :detective1:

o ye not heard that before
thanks for the info :thumbsup:
hope you get it all sorted mate

I think you may need some CalMag but I'm not sure......I'm not familiar with maxi nutes but RO water usually requires CalMAg.

I'm having alot of trouble thinking you need less nutes.....I think you need more.....300 is VERY low for 2 foot high plants and no Cal Mag.

Quote:

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Originally Posted by Weedhound

I think you may need some CalMag but I'm not sure......I'm not familiar with maxi nutes but RO water usually requires CalMAg.

I'm having alot of trouble thinking you need less nutes.....I think you need more.....300 is VERY low for 2 foot high plants and no Cal Mag.

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I actually did add cal-mag a few days ago to just plain RO water, it brought the ppm up to 350, but then it rose to 420 the next time i checked it.. they don't appear to be eating

Its definately N toxicity,
In that case I should flush with plain RO water..
until they perk up? or how long...

Ummm......I don't really know because I've never really seen one in hydro and I'm not familiar with your nutes. Hopefully someone else will know for sure.

it definitely looks like a bit too much nitrogen. however, ive never used hydro, so im not sure how to fix it. maybe just drop the concentration/use pure water for a few days?
(no clue though)

also, 8" may be a bit close for 250w hps, depending on the bulb and its ventilation. do a heat check with your hand,since any heat stress would only aggravate other stresses.

once again, im not a hydro grower, so dont blindly listen to me until someone else can back it up

You should indeed up your nutrient concentration. 3-400ppm is way to low for flowering (3-400ppm is generally recommended for new clones and seedlings). Since you are so low, I would recommend getting them up to full strength (circa 12-1300ppm) slowly to avoid stressing them. Try doubling your mixture to get up to around 800ppm, then after a week, increase it again to get up to around 1200ppm or so.

You will want to start using CalMag with your RO water like Weedhound said. Tap water is full of minerals including Mg and Ca (especially Ca) that your plants need. Unless your tap water has a very-high starting PPM (higher than 300ppm), I would recommend using it instead of RO water.

:D.

gainsevillegreen:

Would having weak nutrients levels cause the leaves to do what they are doing?

The reason why I have adjusted it so low, Is that when I would do my daily PPM check, it would rise, not lower.

Whats causing the leaves to do this?!

I'll definately try to increase the nutrient levels a bit- and start using the bloom nutrients anyway.

I thought RO was a good thing to use in hydroponic system, as long as you use cal-mag, which i have, are you sure using tap water is better than RO+cal-mag? What about the chlorine and chloramine?


This is really confusing
50% of the people who help me say "Not enough nutrients"
the other 50% say "Too much nitrogen, Flush with no nutrients"

Which is it? Both? Flush- THEN increase nutrients? Or just increase nutrients? Or just back of the N and start using bloom nutes?

What is causing the CURLING OF THE LEAVES?!?!?!?

I'm losing my mind omfg sorry

I'm going to go with switch to bloom nutes NOW.
You are showing N toxicity even at that outrageously low EC. That seems very odd. Have you used any superthrive or thrivealive in the past couple weeks? What is the medium that the plants are physically planted in?
And the temperatures you noted- is that in the canopy or just at some location in the room?
Your res temp seems okay. What are you using to AERATE the reservoir?
Those look like tropical sativas. What is their origin?

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Originally Posted by stinkyattic

I'm going to go with switch to bloom nutes NOW.
You are showing N toxicity even at that outrageously low EC. That seems very odd. Have you used any superthrive or thrivealive in the past couple weeks? What is the medium that the plants are physically planted in?
And the temperatures you noted- is that in the canopy or just at some location in the room?
Your res temp seems okay. What are you using to AERATE the reservoir?
Those look like tropical sativas. What is their origin?

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Roger that, switching to bloom nutes ASAP
I have indeed used superthrive maybe 2-3 weeks ago, but only half dosage (10 drops to 20 gallons or so)

They are in 8" net pots filled with hydroton, the rockwool cube they were sprouted in has busted and is no longer there, 5 gallon buckets with airstone discs

The temperature is the ambient temperature of the room, I don't know what the temperature of the top of the canopy is, but it doesn't burn my hand when i leave it there for a few moments.

Each bucket has a designated airpump, AND the reservoir to recirculate them has two airpumps in it with airtubes and stones


They do look pretty tropical, eh? These are bagseeds from probably the worst quality product you could ever imagine. The seeds came out of a 10 gram CUBE. (cut the cube right out of a brick im guessing). can you say SCHWAG?


Whats causing the N toxicity? The beginning of their flowering?
Should i flush for 24 hours, then switch to the bloom nutes? or just add right now?
The ppm is at 360, entirely Cal-mag+

I am starting to think that you have a light feeder there, like a tropical that is perfectly happy in poor sandy soil without much of a food source. I'd raise the lights a couple inches anyway- a few moments isn't QUITE enough to gauge heat and high temps in a time of stress aren't all that great. Once you see that new growth is healthy, drop them a bit closer.
It's good you are flowering them immediately, because tropicals get HUGE and will likely triple in size. In soil, potbound plants show that leaf shape but in DWC I don't know how it goes.
There's one last thing that frequently causes the leaves to look like that... not nearly enough air circulation, or suffocation from overapplication of an oily or waxy foliar spray.
So this is your project:
Bloom ferts, starting at the ppm you are running now and then gradually increasing until you see the start of tipburn, then backing off.
LOTS of air movement- you need a strong exhaust and unobstructed intake. Big plants need to BREEEEEATHE!
Check that the roots have enough space- you might have to look around the internet for this.

I hope this doesn't insult everyone else that was helping me-- but;

I think I love you. :lovestruck:


Alright, Ima start on this right now. First thing, raise the light and get some fans. I'll pretend these are growing in Jamaica now :)
Then I'll have to make a trip to the grocery store for RO water, since it takes over a week to fill up 20 gallons at my house, and then get them their bloom nutes

Thank you for laying it out for me :)!!!!!!
I feel like maybe it's back on track now....

Aww, hugs all around. Don't forget to add your calmag if you are running RO water! Otherwise we will have to scold you! :D