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.