the tops of my plants are wilting help please

[freddie365]

my plants are 3 feet tall and just started the 12/12 light cycle one week ago i started the light cycle with 36 hours off and then on to 12/12 and i noticed that the tops of the plants turning a some what yellow/green i thought it might be the nuetreints witch i chaned to a transition bud mix less strengh than agressive bloom mix and 3 days later my tops are all wilting why help please

[Slevinkal]

Fill out the troubleshooting form in my sig.

It'll get you the best help peeps can provide without having to ask 100 questions first.

[freddie365]

What is your experience level? (first timer, novice, experienced...)novice

Your Equipment:
.1) Type and wattage of lights. (MH, HPS, CFL's, tube fluorescents, LED's)mh
.2) Distance from tops?14 inches
.3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) enclosed reflector
.4) Is there a consistent fresh air supply? yes
.5) Do you have an exhaust fan and a circulation fan no
.6) What are the bulb wattages, kelvin ratings, and schedule? 1000 watt 12/12

Your medium:
.7) Specific brand and type of soil, (coco, peat based soilless...) and anything you've added to it. (vermiculite, perlite, worm castings...) rock wool
.8) Size of container.
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings? no

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph befor adjusting? tap dont no ph
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...)
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...)
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule.
14) How often are you watering between feedings, and how much per watering?
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...)
16) Are your ph levels stable, or do they fluctuate?
17) What is your ingoing water's ph? ...your runoff ph?
18) Do you foliar feed? If so, with what, how often, and at what time do you spray?

Your growroom:
19) Indoors or outdoors? indoors
20) What size of closet, room or hut? hut
21) What are the temps and humidity levels while lights are on? ...With lights off? almost 80 with lights on 70 when off
22) Have you seen signs of insects in the growroom? no

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) indica
24) From seeds or clones? clones
25) Is this an autoflower strain? dont know
__________________

[Slevinkal]

There prob is a pH prob going on.

But if not...

Do the plants look like this (http://cannabis.com/growing/nietz090.jpg)?

[captaincola28g]

i would also consider the 1000 watt mh only 14 inches above the plants. I do know my mh burns hotter the my hps. Check the temps at your plant tops. Would check the simple things before i would go adding anything to correct problem. Also noticed no exhaust fan. I am leaning on heat stress. Have a pic?:thumbsup:

[omycron]

I use 1000 wats have been for 2 years i suggest you give 18 inches i never put less than that and check the temp at the top should be around 25celsius and if you could put some pix itl be easier to figure out the exact problem hope they get better


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