Yellowing/Brown Spots

[BaKedMuffin]

Im into week four of my first stealth grow box and a problem has arose, my bottom most leaves are starting to yellow and get brown spots. I've looked around the forum and the two diagnosis I've made are that I'm over watering it or its developing nut burn. I've been feeding it a half diluted mix of 7-7-7 (Yes I know its the wrong type for vegetation, but I would think its better than nothing, please tell me if i'm wrong), every couple days, watering it every other day. I've checked the PH, its around 6.7. I've included two pictures of the spots developing on one of the leaves, one of the other leave yellowing, and a picture of the top of the plant. Its my first grow, and I would hate to see it die. Thanks for the help!

I should probably add that I did notice a little yellowing of the leaves before I started using the nutrients

 

[2Lazy]

Over-watering. Just by looking at the soil I can tell already that the drainage and aeration is going to be minimal. I also question the quality of the soil, and wonder why you're adding chemical nutrients to an organic system. A simple organic tea made easily at home is all that plant needs.

For that soil you need to let it go almost completely dry between waterings. To the point where the soil is on the verge of dry, but still slightly moist. It's easy to tell by testing the weight of the planter wet vs dry. Add enough water to see some run off and that's good for probably three to five days.

Transplant that thing into a good soil with some perlite mixed in at about a 70/30 ratio. This will help reduce your risk of over-watering by providing pockets for air to hide in the mix.

Otherwise I think the plant is looking alright. A little nitrogen never hurt... Tap water does though.

 

[The Phoenix]

Well BM;

Like 2Lazey said, it's time to get those into some larger pots with some fresh soil and perlite. You could add some dolomite lime for help also.

 

[BaKedMuffin]

I'm currently using this; tinyurl [Dot] com/ybp8wgq potting soil to grow in. Whats your advice on buying soil like this? Are the nutrients that are already in the package to much for the plants to handle? I'd go out and buy the ingredients to blend together my own mix, but part of the reason I've gone micro grow is because I won't be able to do anything large scale for a while. That also limits the size of my container, I'm going to have to start LST, and even then, can't let it get much over 1'6". Thanks everyone for the great suggestions

 

[BaKedMuffin]

Sorry about the messed up link, heres the straight Amazon link
http://www.amazon.com/Scotts-Organi...2?ie=UTF8&s=home-garden&qid=1270579979&sr=8-2

 

[2Lazy]

Listen Lazy. People like you are spreading misinformation about fertilizers. NON ORGANIC HYDROPONIC NUTRIENTS ARE NOT CHEMICALS!!! THEY CONTAIN ELEMENTS IN AN IMMEDIATELY AVAIBABLE FORM. IS POTASSIUM A CHEMICAL??? IF SO, YOU ARE EATING CHEMICALS EVERYTIME YOU EAT A BANANA. HOW ABOUT NITROGEN?? IS THAT A CHEMICAL?? THEN YOU ARE BREATHING CHEMICALS WITH EVERY BREATH. HOW ABOUT SODIUM?? IS THAT A CHEMICAL??? THEN ANYTIME YOU EAT SALT YOU ARE EATING CHEMICALS.

Stop spreading misinformation. Dyna Gro nutes come from technical grade minerals straight from the earth. How is something a chemical when it is taken out of the ground and mixed with water. You are just another know it all organophile thinking organics leads to better plants. LOOK AT THE SCIENCE. HYDROPONIC NUTRIENTS ARE ADVANCED TECHNOLOGY AND YOU THINK ITS BETTER TO POUR FISH AND BAT SHIT IN YOUR SOIL???? OK PAL. THINK ABOUT WHATELSE IS IN BAT SHIT THAT YOU DON'T WANT YOUR PLANTS TO HAVE. YOU KEEP USING YOUR ORGANIC GARBAGE AND I WILL LAUGH MY WAY TO THE BANK WITH MY DYNA GRO

Troll. Do you work for Dyna Gro? Just own up if you do. You have like 30 posts and each is basically "Stupid newb. Use Dyna Gro. It's magic in a bottle."

It doesn't suit each system perfectly. Cation exhange in coco requires different levels of phosphates and calcium, all kinds of alterations to a system is needed for success and one system just isn't perfect for everyone.

I am not some organophile, I use chemical nutrients myself, pull your head which is wedge firmly up your own tail and come to reason dude. You're straight attacking me for suggesting to this guy to flush his soil and use some good ol' fashioned organics to improve the root zone?

Maybe he doesn't have the $200 plus for all the crap you want him to use. I just don't think you can argue against the flavor of good organic buds, and here you are CAP LOCK SHOUTING on the internet. Yikes dude... seriously???

I didn't put any implication on to chemicals as fertilizers, be them good or bad. I was simply pointing out that organics can give this young plant what it needs. You jumped up all over me and its hard not to react to your anger. We are all star dust, I have no misconceptions over what is what, you seem to think that roots suck up nutrients like you suck up strawberry milkshakes. Different companies use different stuff, and I was commenting on what he was currently using, not the products for the company you work for.

Stop trying to sell Dyna Gro to every person in the infirmary and all the new growers. I can see all the posts and it's like you copy/paste your sales pitch all over the place. You're seriously unwelcome in my book. Cutting Edge Solutions, Canna, House and Garden etc, etc. There's plenty of fish in the sea who put real science behind their products other than Dyna Gro. I'm sure their products are great. I plan to try them myself eventually, but on the scale of things I think they represent less than 5% of the grow journals, albums, and diaries I've seen. Organic is popular for a reason dude, it does work. And yes, I think "shit" can be a good fertilizer once it's been composted properly.

We're gonna make [bugs] eat [animal] shit, then shit out [animal] shit, then [the plants] eat [the bugs] shit which is made up of [animal] shit that we made 'em eat.
-Jay

And on topic: That soil is generally treated as the worst soil possible for cannabis around here, and on most other forums. I'm not saying no one has ever grown good bud with it, but the rose potting mix or the organic potting mix would have been better if you had no choice but miracle grow. I think you should do some research, perlite is a given in EVERY soil grow I've seen, and you should have known that coming into this.