Yellow and Brown crispy leaves!

[disrupt86]

Best way to get a good answere is to fill out the form.for starters what is the npk ration of the home depot soil and. What are its exact contents.with little info and pics to show the issues 9nly it looks like over fertilization.u shouldn't have any yellowing this early into flower. this is a human error.and easily fixable.flush now with p.h corrected water and lower your feeding schedule if it gets worse then up the food .

disrupt86 Reviewed by disrupt86 on 04-22-2010. Yellow and Brown crispy leaves! hey everyone, i am attaching a picture of some leaves... They are from my Northern Lights Female that has been flowering for a week and a half.. The leaves are pretty crispy.. and yellow with brown.. please help, I want to figure out what is wrong ASAP so that I may correct it... I am following the fox farms nutes schedule and the soil is just plain old home depot inside potting soil for seedings (no-nutes) she is in a 2 gallon pot (square) and I water with a pint of water every 2 - Rating: 5

[batlin]

Thanks PhatJay. here is my troubleshoot sheet

What is your experience level? Beginner (2nd grow)

Your Equipment:
.1) Type and wattage of lights. CFL 6 x 26w
.2) Distance from tops: 6 - 12 inch (depending on the plant)
.3) Reflector type? None
.4) Is there a consistent fresh air supply? CPU Fans
.5) Do you have an exhaust fan and a circulation fan? CPU Fan exhaust + box fan blowing on them (outside the box)
.6) What are the bulb wattages, kelvin ratings, and schedule? Plants in Veg 18/6 6K Plant in Flower 12 / 12 27K

Your medium:
.7) Specific brand and type of soil, (coco, peat based soilless...) and anything you've added to it. (vermiculite, perlite, worm castings...) NK Lawn and Garden (Lowes) Sphagnum Peat, Horticultural vermiculite, wetting agent, lime for ph balance
.8) Size of container. Veg 1 Gal Flower 2 Gal
.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 before adjusting? Tap water ~ 7.6 ph
11) Method of checking water ph. (ph pen, test strips, aquarium test kit...) Test Strips
12) Method of adjusting water ph. (phosphoric acid, white vinegar, hydrated lime, PH Up...) Using Fox Farms fertilizer
13) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. Fox Farms Grow Big, Tiger Bloom, Big Bloom feeding schedule
14) How often are you watering between feedings, and how much per watering? 1-2 pints when the soil is dry and light
15) Any additives or tea's? (Superthrive, CalMag, molasses, Mother's Earth...) Super Thrive
16) Are your ph levels stable, or do they fluctuate? To My knowledge yes
17) What is your ingoing water's ph? ...your runoff ph? ~7.6 in upper ~upper 5's runnoff
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? NO

Your growroom:
19) Indoors or outdoors? Indoor
20) What size of closet, room or hut? 22Gallon Rubbermaid
21) What are the temps and humidity levels while lights are on? ...With lights off? Lights on, temp ~ 78 lights off lower 70s
22) Have you seen signs of insects in the growroom? No

Your strain:
23) What strain are you growing? (Indica dominate or Sativa dom?) Northern Lights (indica / Sativa mix)
24) From seeds or clones? Seeds
25) Is this an autoflower strain? NO

[batlin]

BTW, I just checked on them for the first time today and the dots on the leaves are moving up to the top, so the bottom leaves have lots of dots and top leaves are starting to show them as well..

[batlin]

Just checked my other room, where I have another plant flowering and its worse!!!

*sigh* help me I am scared my babies are going to die..

here is a pic

[disrupt86]

All the corrective actions I would take are. As follows.1.transplant now .a 2 gallon pot for that size plant isn't big enough.2.check your tds before u add anything to the. Water.if its to low add cal mag.sphagnum peat moss naturally leaches calcium and magnesium.3.get your p.h.issues in check.there is a good artical around here knob run off and corrective actions. Also make sure the pots there going in have adequite drainage.

[batlin]

Thank you for the reply!
do I really have to transplant? If this thing gets any bigger I wont have a place to put it.. was hoping by keeping it in this pot that it would be ok?

I don't know where to get cal-mag here.. I have looked everywhere (local nurseries, head shop, home depot, lowes) can't find it.. Is there anything else i can use to add calcium and mg? like maybe some Epsom salt?

I will check out the ph article you mentioned

Thank you

[batlin]

I went out and bought a cheep soil PH probe.. not sure how acurate it is but it showed one of my plants (the one with the most dots on the leaves) to be 4.0! ouch... the other ones that are having issues showed 5.8 and the ones that are good are showing 6 - 6.2

could this just be a PH issue?

[bigtopsfinn]

Definitely transplant into a bigger pot, preferably with some quality soil and perlite. I'm not that familiar with making mixes, so I can't really comment on where it went wrong. If it's been a while since your last transplant, could be that the buffers ran out.

You can try diluting some crushed dolomite lime and watering with that to try and bring the ph of the soil back up. But the transplant will also help a lot.

Why are those CFL's so far away? I'd say 4 in. max...

[batlin]

Can I repot during flower?

[bigtopsfinn]

Yeah. I do it so that the buffers don't run out at the last stages. The buffers usually last for 6-8 weeks.