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Nute burn?? DWC

Discussion in 'Sick Plants and Problems' started by Mr johnsonvillebrat, Jan 20, 2010.

  1. Hey there 1 week into flowering bue god in DWC. I currently have 5 plants in a 15 gallon dwc using Gh flora nutes. There are about 5-10 leaves on my plants that look like this. yesterday I flushed and cleaned the entire res and the plants are currently in water ( no nutes) I think I Will start adding back a diluted nute solution in a few days. Will these leaves come back or are they permanently like this....Any ideas?
    heres the pic
    http://forum.grasscity.com/attachme...263856265-my-fist-grow-400-hps-dwc-seed-5.jpg
     
  2. How close are those to the lights? How hot is it in there? It looks like it is wilting from heat.
     
  3. the light is a 400 w hps and it is about 15 inches from the top of the biggest plant. temp ranges from dark 68-74 and light from about 75-80. Water temp in my system is sitting fairly steady between 67-69..think i should oull the light up a bit about 24 inches? The affected leaves are typically lower on the plant, the leaves that are closest to the lights are fine?
     
  4. Weird looks like nitrogen toxicity.
    What is the pH, PPM?
     
  5. ph is steady at 5-7-5.9 ...not sure what ppm is, ppm meter is broken and Im a little strapped at the mo, i was using straight tap water before ( very clean mildly treated water) with gh nutes and all was fine. when I flipped to 12/12 added RO water and was using lucas formula. I think Ill go back to my tap water and half strength gh nutes soon....do the leaves recover,?? Or am I better off getting rid of them?
     
  6. ph is steady at 5-7-5.9 ...not sure what ppm is, ppm meter is broken and Im a little strapped at the mo, i was using straight tap water before ( very clean mildly treated water) with gh nutes and all was fine. when I flipped to 12/12 added RO water and was using lucas formula. I think Ill go back to my tap water and half strength gh nutes soon....do the leaves recover,?? Or am I better off getting rid of them?.

    I assumed it was some typf of overnuting or toxicity, and so that is why they are being flushed with straight water for a few days....Im just trying to decide ether they will fully recover and when I can consider adding back nutes. Thanks for replies guys any little bit helps
     
  7. How many airstones/pumps do you have? I have had a similar problem in DWC and it was caused by the roots not getting enough oxygen bubbles. If I were you I would add another pump and more stones and see if that helps her.
     
  8. hmm ok i guess ill give it a shot...i did until recently have 5 plants in there now i only have 3....i have 5 10' inch stones in there from 2 pumps both with dual outputs..think now that i only have 3 lants in a 15 gallon res it will be ok ?
     
  9. Should be fine. Just lower the nutes.
     

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