Big orange blotches on leaves and edges going yellow/brown

Sorry for the bad pics, but I'm having trouble telling if she is suffering from nute burn or over-watering. The very bottom leaves suffered the same fate and practically crumble off now. What's up with it? Also, I've got another growing and both don't seem to be growing as much as they should be, it's been almost 4 weeks from seed and I'm not sure how well they're doing. So many thanks in advance for replies!

phosphorus deficiency perhaps?
http://www.icmag.com/ic/showthread.php?t=11688
could be the ph is off, locking it out, or the temp is low, also not allowing the plant to take it in.
Pic 2,3 looks a lil purple, another sign that could be happening.
wait til ya get more responses, thats my vote tho

thanks for the reply. You reckon? I'm scared of doing any thing with it now in fear of making things worse. It's not the temps, the temps are good. Maybe it is the ph because I will admit I didn't bother buying any ph testing stuff so I have no way of telling.

I'd get some Kelp extract (Good local nursery or garden center) and give her a weak dose. Then top dress some bone meal in around the stem. Both are high in P. You never did tell us what you're feeding. If it's still just the nutes in the soil, they're definitely lacking P..

Sorry, my bad. I'm using all biobizz nutes (bio-grow, top max, bio-bloom and I gave them the root grow when they were younger.) About 1ml per liter of water of each kind (except the root grow), then again when I say ml, it was my best guess since I didn't have anything small enough to measure a 1ml, so I just filled the cap of the nutes and put it in. The bio-bloom has an NPK of 2.0-60-3.5 so maybe I need to add more of that? I was just sticking to the official biobizz feeding chart. Also for practically 4 weeks in, how do you think they're doing? I thought they looked a bit small considering that I've read a lot of people flower at about 5 weeks, these certainly don't look anywhere near ready to flower...

A 2-60-3.5 would tell me that it ain't a P deficiency, unless for some reason the plant isn't taking it up. It doesn't look like N deficiency either. I have no freaking idea. Have you checked the pH of your run-off water? If for some strange reason the pH did fluctuate into the really high or low region, THAT could explain it. If you're feeding at what you posted, there is no rational explanation. That high P can lock out iron and some other micros, so be careful with that.

Ah well thanks for the help man, I myself am lost. The other plant seems to be doing fine. Btw that was meant to be a 6.0 but I typo'd it as 60. Perhaps I have just over-watered. Hopefully I'll get more replies and be able to resolve it

that fertilizer is good for rooting clones etc, but veeery bad for vegetative growth! your plant is getting waaaay too much phosphorus and not enough nitrogen! with that fertilizer, you couldn't possibly give it enough nitrogen without burning it with phosphorus. the dead part of the leaf definitely looks like phosphorus burn to me. flush her out and begin feeding with a high nitrogen fertilizer, something like fish emulsion (5-1-1) - one last word of advice, and that is slooow down my friend! you shouldnt be feeding at all until week 3 or 4 at all, and even then, feed at half or even quarter strength until you know your plant can take it. if you are inexperienced, i highly recommend organic liquid ferts to chemical liquid ferts. organic is sooo much more forgiving. be patient and wait it out. good luck

This is my ft grow haha, so yeah majorly inexperiencirsed. And I'm just feeding exactly by the biobizz chart, which told me to feed from the get-go with root grow, and then add the rest when the next week, but biobizz ferts are organic, that's why I got them, I didn't want chemical ones. The Bio-grow has an NPK of 8.0-2.0-6.0, should I flush her then maybe only give her that as opposed to the mix of all three? Now that I look at the NPK of all three, combined it's probably too much. That feeding chart is a crock of shit. Thanks for the informative reply ! Heres the chart if you wanna see it too...

IvaBigun1 said:

Ah well thanks for the help man, I myself am lost. The other plant seems to be doing fine. Btw that was meant to be a 6.0 but I typo'd it as 60. Perhaps I have just over-watered. Hopefully I'll get more replies and be able to resolve it

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That makes a whole lot more sense, but I have seen P levels that high in supposed "Bloom Boosters". But now that we've ruled out micronutrient lock out, I'm more confused.

IvaBigun1 said:

This is my ft grow haha, so yeah majorly inexperiencirsed. And I'm just feeding exactly by the biobizz chart, which told me to feed from the get-go with root grow, and then add the rest when the next week, but biobizz ferts are organic, that's why I got them, I didn't want chemical ones. The Bio-grow has an NPK of 8.0-2.0-6.0, should I flush her then maybe only give her that as opposed to the mix of all three? Now that I look at the NPK of all three, combined it's probably too much. That feeding chart is a crock of shit. Thanks for the informative reply ! Heres the chart if you wanna see it too...

View attachment 1796746

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Which is one of the reasons I don't much care for those "Grow in a Bottle" nutes. Growing is more about understanding the plant and less about just "following directions/recipe to bake the cake". When something goes south, you have no basis on which to decide what went wrong. When someone tells me "I'm feeding Bio-grow" or whatever, I get that deer in the headlights look, 'cuz I deal with NPK, not fancy names. Besides that, those charts confuse me, and I'll be the first to admit I know nothing about those expensive nutes as I have never seen the need for them. My shit is just as tight as anyone else's using my "inferior, inexpensive" nutes.

ylem said:

that fertilizer is good for rooting clones etc, but veeery bad for vegetative growth! your plant is getting waaaay too much phosphorus and not enough nitrogen! with that fertilizer, you couldn't possibly give it enough nitrogen without burning it with phosphorus. the dead part of the leaf definitely looks like phosphorus burn to me. flush her out and begin feeding with a high nitrogen fertilizer, something like fish emulsion (5-1-1) - one last word of advice, and that is slooow down my friend! you shouldnt be feeding at all until week 3 or 4 at all, and even then, feed at half or even quarter strength until you know your plant can take it. if you are inexperienced, i highly recommend organic liquid ferts to chemical liquid ferts. organic is sooo much more forgiving. be patient and wait it out. good luck

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That wouldn't be a phosphorus burn, if anything, from the pics it would be a deficiency. That NPK value is a good nutrient combo for flower, but I do agree that he needs to up the N. Plants need P during veg too. P is crucial in so many metabolic processes, they are way to numerous to go into here, but the fact is P is crucial not only for bud development, but for building and maintaining a healthy root structure and healthy cells. ATP is a phosphate critical in metabolic energy transfer and conversion for all cellular growth. Without it a plant can't survive.

What do you do for nutrients then? I probably fell for some gimmick, but I felt they'd be more convenient than trying to find a source for each element individually. I'm gonna make my own feeding schedule now though, I don't really think that chart is much use. I know it isn't like following a recipe, but I thought for a first timer it'd make the ride a bit smoother, if anything it made it worse haha, I guess it's all about experience and learning what you've done wrong and what works. Regardless of what was up with it, I've just flushed them both 'cause I figured it couldn't really do any harm, good to clean the soil. Should probably read the NPK values this time and decide for myself what they need and go from there. Thanks for all the help though guys, this site is great!

I'm totally and incorrigibly organic. I use Bunny Poo, Earthworm castings, Kelp, and bone meal as my primary nutes. I supplement that with "teas". Lots of info to be had in the organics section. It takes a bit to get your mind around, you actually have to learn a bit about biology and plant physiology. But the fun is in the learning.