Something is wrong - Please help! (pics included)

Thanks in advance for taking a look at this. I'm a first time grower. I have a plant that is starting to show signs of some kind of deficiency, and I need some help identifying the problem. There are currently 2 leaves that look like the most severe picture ( the one on the left). These leaves are at the bottom of the plant.

There are another 2 leaves that look like the less severe picture (the one on the right). These are located just a little higher on the plant than the more severe ones. All the leaves that are higher on the plant than these still look fine, so hopefully I have time to do something.

Here are the details regarding how this plant has been grown. Thanks again for any help!

Grown in Soil.
How long has this problem been going on? - 5 days (day 1 I could barely notice a problem)
What STRAIN are you growing? - Sativa (unsure of exact strain)
What was the establishing technique? (seed or clone?) - Seed
What is the age of your plants? - 12 weeks
How long have they been in the soil mixture they are in now? - 11 weeks
Were they in the same mixture when they were seedlings/smaller plant? If not, what mixture were they in before? - They were moved to this soil when transplanting from small cups at 1 week
How Tall are the plants? - approximate 42 inches
What PHASE (seedling, vegetative or flower) are the plants in? - Just finished 3rd week of flowering
What brand Nutrient's are you using? - I'm in Europe, so the brands are different.
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful* - Mix has 4% Nitrogen, 6% Phosphate, 6% Potassium Oxide, small amounts (less than 0.01% of each) of Iron, Boron, Copper, Manganese, Molybdenum, & Zinc. Using 5 ml of solution for every 2 liters of water.
How often are you feeding? - once every 5 days or so (when the top few inches of soil are dry)
If flowering, when did you switch over to using Bloom nutrients? - first watering after switch to 12/12, which was 3-4 days into week 1 of flowering
What is the pH of the "RUN-OFF"? - Soil pH is 7.
What method of pH test was administered? Using Strips? pH pen? - pH meter used to measure soil pH, when soil is wet.
What is your RH Factor? (Relative Humidity) - Low humidity
What is the Day/Night Temp? (Include fluctuation range) - 75/68
What is the current Air Flow? (cfm etc.) - growth area is large, no mechanical system in place for air flow.
What water are you using? Reverse Osmosis (RO)? Tap? Bottled? Well water? Distilled? Mineral Water? - Filtered through Brita
Has plant been recently pruned, cloned or pinched? - No
Have any pest chemicals been used? If so what and when? - None
Are plant's infected with pest's? - No

not sure if brita's remove calcium and magnesium, but it looks like a mag def.
https://www.rollitup.org/general-marijuana-growing/1469-marijuana-plant-problems-cures.html

A Ph of 7 is kinda high. Alsways thought Ph for soil should be in the lower 6's. Dial down your Ph a little bit and see if it spreads to other leaves.

Why do folks insist on giving out bad info? seriously if you don't know the answer move on

not a mag def, Brita filter is great, removes chloromine
PH of soil is supposed to be 7, checking ph of soil while wet with ph pen is not proper

to the OP

you have nute burn, flush and wait 5 to 7 days before feeding again and back off the nutes a bit

Thanks Riddleme - I did flush with the last watering, which was 3 days ago (only water). The problem has gotten worse since then though. Would the nute burn be specific to the lower leaves?

I was about to get epsom salt and spray a solution onto the leaves to try and help, so now I'm not sure what to do....

How did you flush? how much water? what is pot size? and did you PH the water? if so to what PH value?

the damage will not heal, you need to watch new growth for improvement and yes nute burn starts at the bottom and works up

riddleme said:

Why do folks insist on giving out bad info? seriously if you don't know the answer move on

not a mag def, Brita filter is great, removes chloromine
PH of soil is supposed to be 7, checking ph of soil while wet with ph pen is not proper

to the OP

you have nute burn, flush and wait 5 to 7 days before feeding again and back off the nutes a bit

Click to expand...

not trying to be a dick, BUT, should we let you answer EVERY question??
My first 2 words were NOT SURE. I then offered a link for him to READ AND LEARN and maybe find the answer to his question. you see, it's a forum, we help each other. I'm not sure but I'm guessing you don't have the time to answer every post.
so, do you still feel we should just move on and let you answer all the posts?

Riddleme - I flushed with just regular Brita water. I don't know what the pH was. I did a search on here regarding how to flush, but I can't seem to find the right answer. Is distilled water the right to use when flushing?

The pot is about 2.5-3 gallons.

VICTORYGARDENSHYDRO said:

not trying to be a dick, BUT, should we let you answer EVERY question??
My first 2 words were NOT SURE. I then offered a link for him to READ AND LEARN and maybe find the answer to his question. you see, it's a forum, we help each other. I'm not sure but I'm guessing you don't have the time to answer every post.
so, do you still feel we should just move on and let you answer all the posts?

Click to expand...

I too was not trying to be a dick, and no I do not have time to answer every post, I tend to look at the ones not answered by others (or few answers) and I am not the only grower here that knows this stuff. but the wrong answer even if it is a guess can lead to more problems if it causes a new grower to react. I am the first to say that hangin out in the problem forum is a great way to learn cause you see the problem and then hopefully the answer, the more you see it the more learnin

I tell every one that follows my threads to buy the Garden Saver book hell it's only $15 and is a must have for all new growers

dk1978 said:

Riddleme - I flushed with just regular Brita water. I don't know what the pH was. I did a search on here regarding how to flush, but I can't seem to find the right answer. Is distilled water the right to use when flushing?

The pot is about 2.5-3 gallons.

Click to expand...

a proper flush for 3 gallon pot is 9 gallons of water, brita water is good, low ph 5.8 to 6.2 is best for a good flush

here is a link

http://www.amazon.com/Marijuana-Garden-Saver-Handbook-Healthy/dp/0932551912

and it's on sale

riddleme said:

a proper flush for 3 gallon pot is 9 gallons of water, brita water is good, low ph 5.8 to 6.2 is best for a good flush

Click to expand...

Thanks again Riddleme. So just to make sure I got it right - I don't use 9 gallons all at once right? That would drown the plant, no?

I gave it about a 1/4 gallon 3 days ago with no nutes, just brita water. If you can clarify how I should administer these 9 gallons (all at once, or spread over the normal watering cycle) I would really appreciate it. Thanks again!

It's a phosphorous deficiency.

dk1978 said:

Thanks again Riddleme. So just to make sure I got it right - I don't use 9 gallons all at once right? That would drown the plant, no?

I gave it about a 1/4 gallon 3 days ago with no nutes, just brita water. If you can clarify how I should administer these 9 gallons (all at once, or spread over the normal watering cycle) I would really appreciate it. Thanks again!

Click to expand...

All at once

your soil ph is too high as well at 7. Lower your ph to 5.5 when watering. And thats after 3 weeks of flowering????

riddleme said:

All at once

Click to expand...

Sorry for sounding stupid.... but, in the pot right? Just let the water drain through the holes in the bottom? And this won't drown her?

dk1978 said:

Sorry for sounding stupid.... but, in the pot right? Just let the water drain through the holes in the bottom? And this won't drown her?

Click to expand...

That is correct, plant may droop for a bit but will wake back up, best done right after lights come on

smokebros said:

your soil ph is too high as well at 7. Lower your ph to 5.5 when watering. And thats after 3 weeks of flowering????

Click to expand...

since when is a soil ph of 7 too high, it would actually be perfect, all soil makers strive to have a ph of 7

riddleme said:

That is correct, plant may droop for a bit but will wake back up, best done right after lights come on

Click to expand...

Thanks again for all the help.

My lights go off for 12 in about 3 hours, so I'm going to hold off until tomorrow when they come on. Any recommendation on whether to use more nutes at all at some point after the flush? If so, how long would you wait?

dk1978 said:

Thanks again for all the help.

My lights go off for 12 in about 3 hours, so I'm going to hold off until tomorrow when they come on. Any recommendation on whether to use more nutes at all at some point after the flush? If so, how long would you wait?

Click to expand...

wait for em to dry before feeding again