MH Heat Burns - 2nd week of Veg

[joyridn247]

note: I searched and found some threads on burning but nothing really pertained to my "one off case."

apologies ahead of time if I missed a thread about this specific situation.

*I used Dr. Rosenthals book "MJ Saver."

question: What steps should I take to revive these plants/leaves?

scenario: I used a 600W MH bulb in its 2nd week of Vegetative, about a foot away in a 3x3 room. Light was on for an hour before I noticed the burning.

resolution: What I've done is used 1 tsp of MgSO4 (epsom salt) per gallon for 2 days now. reduced lights back to 100W Daylight CFL's

Here are pictures of what they look like:http://i9.invalid.com/albums/a65/Cavalierwa/misc/burnage.jpg

Hydro Growers:
1. Are you growing from seed or clones? royal queen seed co amsterdam
2. How old are your plants? 2nd week veg
3. How tall are your plants? 3 inches
4. What type of hydro system are you using? ebb/flo
5. What brand/type of nutrients are you using? advanced nutrients - grow master level
6. What is the Ph of your nutrient solution? 5.8
7. What is the PPM/EC of your tap water? distilled water:
8. What is the PPM/EC of your nutrient solution? 1040
9. What is the temperature of your nutrient solution? 65
10. Does your PPM/EC show a rise or fall when you do your daily PPM check? no
11. Does your pH show a rise or fall when you do your daily check? no
12. Do you foliar feed or spray your plants with anything? b52 2ml/L
13. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights") 100 watt daylight CFL

14. How close are your lights to the plants?6 inches
15. What size is your grow space in square feet? 2x2
16. What is the temperature and humidity in your grow space? 72F/49%
17. Have you noticed any insect activity in your grow space? no
18. How much experience do you have growing? first

I would appreciate anytype of feedback.

Thank you all so much. This is my first post as a nube hydro farmer.

*Looking to meet alot of new people and swap experiences.

Thank you again -

 

[MIway]

The pic isn't popping up very big for me... can't really see it well...


But, just struck me odd that you are foliar spraying w epsoms... if the plants have been stressed, best idea is to just back off... less light, less nutes... stress free.

For that matter, the cfl's at 6" might be a bit much after being fried by the hps... why not go 12, or 18"...? Let em chill.

Once new growth starts in again (they pick up), then bounce em a bit... u'r nute levels are even a bit high for seedlings.

I'd just chill on em a bit. KISS ;-)

 

[MEGA956]

//I agree, the light is to close.

 

[hiboy]

The fluorescent shouldnt harm your plants, even in that condition. I would cut off any burnt leaves, or cut then with scissors to the non burnt part, so rebuilding will begin . Now you already know that h.i.d. lights need to be a minimum of 3' away when they are that small. The bummer is that problems like these just delay and ur 4 week veg time just turned int 8 weeks
hiboy