Drooping, yellowing, brown spots, help!

My Snow White plant is now 2 weeks old. The lowest 2 sets of fan leaves are drooping and yellowing with brown spots/patches. Can anyone help, please? I'm not sure what it is or how to fix it. I know it's kind of a vague description, so I will post a pic when I get home from work. My 4 week old Indica is under the same conditions and is doing great, with no signs of color change, drooping, or anything out of the ordinary for that matter.

She's in MG Organic soil, under 24 hr light, which is two 26w (100w equiv.) CFLs at 6500k/"daylight" about two inches from the top of the plant, temps avg 80-85 degrees F, 20-30% humidity, watering every 3-4 days when the soil feels dry about 1-2 inches down and the pot feels very light. Not giving nutes/ferts outside of what's premixed into the soil. I'm not sure about pH or anything because I haven't made it out to get any supplies yet, as gardening centers tend to switch over to winter supplies this time of year, and specialty stores are across the state from where I live. I let all water sit open for at least 24hr before giving it to the plants for as many additives as possible to evaporate.

Get a pH meter at your local bigbox hardware store immediately...I wouldn't do one thing anyone says until you know you pH. While you are there, buy a bag of pulverized limestone for 3 bucks (its like a 50 LB bag and usually in stock in the winter as people start using it real early in the spring) cuz I bet your pH is low due to the MG soil and you need some lime to bump it up...

The only big box hardware near me is Home Depot, and I was told by an employee that they don't sell them. That being said, I went online and ordered a pH meter, a bag of lime, and a 100x scope for future use, all with 2 day shipping. Hopefully whatever is going on won't have too bad of an effect between now and then.

This is what I mean.

Through the help of much reading, I've come to the conclusion that my Snow White's problem is a potassium deficiency. To (hopefully) solve this problem I've flushed the soil with about a gallon of water, and when it's dry again I will feed her a well balanced diet to help her out in that department.

Just to update, Snow White is doing well. What I did worked, the damage on the leaves has stopped spreading, and the plant seems to be slowly returning to normal growth.

some of the small clones i have had do the same thing when they hit soil. i dont know why but i always just leave them be and they will grow out of that stage. there shouldnt be any def. with that mg soil it has nutes in it and that little plaant couldnt eat them all up that fast. but as far as what they sait before make sure you are PHing your water that kind of a big deal and each level of plant likes a diff. ph. so read into it. good luck man!

some soils are a bit too hot for young clones and especially seedlings, i have had young plants fried by plagron bat mix, biobizz all mix and also westlands multipurpose with added JI. noadays i just use B&Q GP in the pink bags. sometimes a plant will show signs of a problem when put in a soil that is too rich, but gradually get used to it and be able to handle it when they get bigger, ive hd no problems with batmix whe ive re-potted prior to budding, but these were 4 week old clones. Sometimes it may just be the strain you grow as some have less nute tollerance than others.

I myself, switched from Miracle Grow to there other soil, Scotts soil. I think that works better.

Some may be surprised to hear it, but the MG Organic that I've been using hasn't given me any problems at all as far as nute burn. I think the NPK is something like .25-.10-.25 with a two month release, or at least somewhere near that range, regular MG burned the crap out of a previous plant, which made me skeptical of the MG Organic, but it was around for houseplants and such, so I used it and have no regrets so far. This was absolutely a K def. brought about by soil pH being too low and locking out the K. I flushed with "clean" un-pHed water (tap runs at about 6.6, and I let it dechlorinate) gave it about a day, checked soil pH which was very low still, so I mixed up batch of nuted/pHed water and watered, and she has been doing nothing but getting better since.

I'll be honest and say that I have not paid any attention to pH before this, but my lesson is learned. I got a kit to test/adjust water, and a soil meter ASAP, and have been testing/adjusting regularly now. I also added lime to the soil to help stabilize the internal pH of the soil, haven't had to mess with water pH too much yet, and have both of my plants steady at 6.6-6.8.

Hudsonvalley82 said:

Get a pH meter at your local bigbox hardware store immediately...I wouldn't do one thing anyone says until you know you pH. While you are there, buy a bag of pulverized limestone for 3 bucks (its like a 50 LB bag and usually in stock in the winter as people start using it real early in the spring) cuz I bet your pH is low due to the MG soil and you need some lime to bump it up...

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Ended up being the advice that worked, all I did was put in a little research to see what problems low pH causes and how to fix them.
Thanks a ton!

I think of the "fancy" nutes as caviar and champagne, great for adults, but would make a little kid very sick........think about it.......BB

Burger Boss said:

I think of the "fancy" nutes as caviar and champagne, great for adults, but would make a little kid very sick........think about it.......BB

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I love the comparison.