FINNALY!!! My troubleshooting form is filled!!! HELP!

S=Traditional Soil
E-indoor
E-Soil
E-Plain Soil Mix
CSL-Soil with Wormcasts (18%) + 80 soil + 2% rice
E-Tapwater
E-6.9 Water pH
HRT-Source water EC (if hydro)
E-2.5 months
E-No fertilizer, yet. I used some N while they were vegging
E-250W HPS 22cmts
E-22C-28C
E-60% humidity
E-12/12 photoperiod
E-BIG window
E-Earth pH is 6.5

This is it. I got the pH meter and got this awesome number. 6.5pH. I knew it wasnt that :P . NOW here comes the update.
I placed on the suffering plant a 10-50-10 fertilizer today, so that i give her the P she needs while she is flowering. Do you believe this is a SEVER P defficiency?
It is slowly happening to the other flowering-chiks, so i believe it might be P.
I am just amazed of HOW fast this nute-defficiency burns the plant. Its just impessive. It took 3 days and the chic became TOTALLY dry.

I will place the pics again.

This one is from a leaf from a starting-to-get-sick plant
http://i44.tinypic.com/op8s4k.jpg

This one is from a plant that has been totally attacked by the sickness.(took 3 days to become like this so i have to act FAST)
http://i41.tinypic.com/2i2315k.jpg

I added the ferlizer to the 3 plants. One of them is burned(pic 2) one of them is slowly having the lower leaves burned out(pic 1) and another one is having a N defficiency, but its normal cause she is in her 6th week.

Thanks for your quick answer.
Peace

You know I was growing some Tomato plants outdoors once and they had the same problem you do. Found out our tap water is really hard. Might want to check your Alkaline levels in your tap water.

I have no idea what it could be.

Looks like over fert if anything. Cause I over ferted a plant (I thought) and she looked like yours eventually.

Maybe water has some nutes that burned them?Calcium etc...
I found this link on wikipedia. It says: lower leaves show signs of P deff BEFORE the rest of the plant, and thats exactly what happened to them. Still i need to know whats wrong :P
Phosphorus deficiency - Wikipedia, the free encyclopedia

GOD i wish i were an agronomist sometimes...

Another 5th week plant is being attacked!!!
This is the pic
http://i42.tinypic.com/2khsh1.jpg

The leaves get very thin and soon dry out like the other plants i showed in pics before. The 10-50-10 that i added 3 days ago doesnt seem to stop the sickness :S

Should i flush? PLEASE help me!!! As you can see there are some marvelous flowers that i might lose if i dont fix this problem...
Can this be an humidity problem?(i might have a broken humidity-meter)
N defficiency?
P defficiency?
Nute burn?
HELP!!!

Sounds like over fert. I've burned up more than one with a 10-52-10 Schultz. I found out you should only give that stuff 2-3 during the whole flowering cycle and use 1/2 strength or 1/4 strength.

Looks like over fert too. Leaves curling under, drying up fast, crunchy. Deficiencies won't kill a plant this fast. Pretty sure you burned them up.

The plant in the first post looks too far gone. Pretty much completely dead. Next grow, I would get some better soil, because when you say "soil" is it just soil from outside? Or is a peat mix, store bought? Use nutes with caution, better to under do it than over do it.

Wish I could help more, but the only time i seen a plant look like yours was with over fert.

Well ive only fert ONCE 3 days ago. The problem started BEFORE i used fert. Soil is a soil mix.80% soil 18% wormcasts 2%rice. Maybe soil is toooo rich and burned them?

Can i flush so extra nutes go out of the pot? And if so...HOW?

What kind of soil? Just outside, from the ground, regular soil?

i bought it. Its some regular mix. No perlite or anything in it. Flushing option?

More specific, brand name, NPK values, is it sandier or more peat mossy.

I just had a bad experience w/ some cheap soil I bought, actually had styrofoam instead of perlite. Switched my clones back to MG and fixed pretty much everything.

Could also be rootbound, maybe some root rot, the soil could become very compact actually crushing the roots and not letting them grow. Probably not draining too well and that could cause some root rot.

i transplanted them because i had to check the roots.
Results: NOT rootbound nad roots look perfect.

Another idea? BTW another flowering one is being affected...

Under most circumstances, you should have a feeding regimen in place for flowering. If you mix your own soil, adding all the amendments yourself then this isn't always necessary, but if you're not then you need to be supplementing the phosphorus and potassium that your plant is leeching from the leaves. It looks like it could be a really bad case of phosphorus deficiency, so you might want to consider using your bloom fertilizer on the plants that are just starting to show symptoms. Only start out at about 1/4 of the recommended dosage, especially if you're using a strong fertilizer that's made for tomatoes or perennials, and work your way up gradually.

If this is only happening after veg, and during flower...likely it's either what you've transplanted into, (your soil mix) or you nutrients. Plants use phosphorous in veg too, so possibly would see signs early.

If there's no perlite or other ammendment to lighten-up the soil, your soil can suffocate the root system. The mud compacts around the roots, starving them of air and nutrients....and promotes root rot.

A good commercial soil (and perhaps some added perlite if necessary) helps avoid most of these types of soil problems, and using rose food (10-52-10) is a great way to overnute your ladies.

If you do some research, you would notice the NPK numbers on the package. Do yourself a favor, and check-out the normal nutrients most cannabis growers use. Fox Farms, Botanicare...to name a couple.

FF Tiger Bloom is 2-8-4. (given every week per instructions) The most I've ever given was a double dose, pulling the theoretical ratio to 4-16-8. It severly burned the ladies, and stunted them dramatically even at this low ratio. You are giving double this semi-toxic ratio, every how often...?

I'm with Mr. Clandestine on this one...1/4 to 1/8 dose, and wait a few days between dicking with it, or you'll end-up loving your ladies to death.

2% rice? Why? Was it composted? I'm pretty sure cannabis wont uptake rice without a hollandaise or soy sauce...but I hear butter works in a pinch. :jointsmile:
(kidding)

Thanks rusty and clandestine
I have only ferted ONCE with this 10-50-10. But now they are dead...that is for sure.
I will get some 10-10-10 or something with less amounts of P so that ferts wont burn them. Tho nute burn didnt kill them because they died even before i added the fertilizer.
These is a pic from the roots. (they dont look rotten or unhealthy to me)
http://i41.tinypic.com/2j4sjde.jpg

For the next grow:
i will get some perlite and mix 40% perlite and 60% soil mix (BTW rusty its not rice its something i cant translate correctly, but it is a part from the rice)
For the next time should i start adding the fert with high P before they start flowering?