Someone please confirm my hypothesis:

My plants started off green and vibrant. Then:
-I noticed grey tips on the bottom leaves which turned yellow plus twisty bottom leaves
-After the yellow they (the tips) turned brown
-After the brown tips the whole leaf started yellowing
-So I flushed and left it for a day
-The day after I flushed again with pH'd water (1gallon; container is 14oz.)and immediately nuted with pH'd nutes (you know, like i add the nutes then ph the water) with recommended dosage for seedlings
-Now the yellowing has either halted or slowed down and the tips have also been fine

This would be what? N def. or nute burn or pH or combo?

Let me know, thanks, I had such a hard time diagnosing this retarded situation.

PS> after i pH'd i tested the solutions to be at 7 using the colour guide

G'day maspino1,

I have a limited knowledge on this, as I am starting my research in this area...

There are many variables you need to consider when diagnosing problems eg: Young leaf, old leaf, stage of growth (Age of plant), environment, mediums, etc...

Appears you have had a combo of - deficiency and perhaps PH issues, though the turning down and browning of tips can indicate nutrient burn but, this can be normal for older leaves nearing harvest (Old leaves will turn yellow and eventually drop off). Here are some systems/reasoningâ??s relating to your post:

1. Yellowing of lower leaves = Nutrient deficiency (dependent on age of plant?) and or PH too low and water is acidic
2. The turning down of tips and browning = Nutrient burn
(Turning up of tips and side of the leaf and evedince of browning = Heat issue)
3. Mature leaves turn yellow and edge areas turning dark grey = Nutrient deficiency OR just old leaves dying (There are slight differences you need to know)

Hope it helps a little...

Cheers!

Lockout from too much fert in the soil. Classic to see both tipburn and N def on the same plant. Too much of one thing and too little of another lol. Imbalance. The salt buildup in your soil making the roots unable to selectively transport certain ions across a membrane.

I'm stoned. I need to go to bed with a pile of comic books and a hot cocoa. G'night.

thanks for the answers, i guess it must've been pH issues then
i'm gonna see how it does for a few days and then update if things are still pretty shitty

omg my runoff is perfect now, it's yellowish green so somewhere between 6.5 and 7.0
so pH issues are out
the only thing left to consider is:
-over nute/nute burn
-N def.

overwatering isn't possible with my medium so i've already passed that consideration

PS> yellowish-green run off in reaction to the reagent

this brings me to another point, since coco is soilless it's in the category of hydroponics right?
i mean when i water it's pretty much like ebb and flow or top drip where i run water from
the
top and let it drain....
so would that mean i have to go down to 5.5 like hydro??

In relation to PH and hydro, a suggestive guide, hydroponic systems run a PH level between 5.8 - 6.3. I keep it stable between 6.0-6.2 with a water temp of 25 degrees celsius (77 degrees fahrenheit)

Quote:

---

Originally Posted by maspino1

this brings me to another point, since coco is soilless it's in the category of hydroponics right?

---

I'm not sure, lets look at it - grin:
- Coco is in the category of "Mediums"
- Hydroponics is a system that utilises mediums
- Is Coco specific to Hydro System (I'm not sure)? If so, then your query is the right one...

Cheers & Enjoy!

lol thanks jmd, it still hasn't gotten better, im not sure if the browning is turning green
or there's more light green patches about to turn brown
ay...
thanks for your help guys

If you were able to get some pics of your troubled plant and post them in this thread, I'm sure we'll (Others in forum etc) be able to disgnose the symptoms more accurately...


Besides that, it'll be fun researching/troubleshooting the issue etc - grin

Cheers maspino1

you're right, here are some pics (shitty quality since taken with phone cam):
http://www.snapdrive.net/files/47078...0301080021.jpg
if you look hard enough you can see the first 3 blade leaf at the top. some weird growth on this one, whorled phyllotaxy for sure.

and i got another problem i was hoping you could help me diagnose
http://www.snapdrive.net/files/47078...0301080022.jpg
btw, that's a 1 day sprout, growing in coco, can you fucking believe it?? it sprouted out the ground this morning
and i wanted you to see the cotyledons are curled inwards even though the green seems to be fine
i did end up flushing the coco this afternoon with some tap water to reach a more neutral ph then ran about 500mL
of nutrient solution pH'd to 6-6.5 and i did that until the ph of the runoff was the same color reacting to the reagent as
was the feed solution

let me clear up the part about my 1 day old seedling:

after it popped out of the ground it was growing fine. i wanted to make sure the ph was
on point so i ran some nutrient solution through it and the runoff came to about pH5-5.5
so, i used a few cups of plain tap water until the runoff became pH6.5-7 then ran some nutrient solution through
it again until the pH of the run off was the same as the nutrient solution's pH which was around pH5.5-6
and now i've noticed that the cotyledons are curling down

from what i've read it's overwatering but i don't understand, it can't be since i'm using coco as well i have many holes
on the bottom of the container to allow air flow through the medium from the top then out the bottom or vice versa
what would you think it is?
and i used a very light nutrient solution, recommended dosage for seedlings according to the container instructions

Since it seems Stinky helped you out, I'll just give you these for future reference:
Revised: The Complete Guide To Sick Plants,pH and Pest Troubles - PlanetGanja.com

and

Steve's place - Plant Mineral Nutrition

I definitely dig the second page. It explains things easily and clearly. For the first plant: You're not using a pre-nuted soil are ya? Also, it looks decently deep in that Solo cup, maybe a half inch/inch down? If so, repot and raise her, or add a fan; maybe she's not getting enough airflow. The second, chill out on the water and skip the fert for now. She's growing a root system right now and living off the cotyledons. Don't fertilize until at least the cotyedons die off.

oh god what's wrong with me, i keep forgetting to add the details
i forgot to mention coco grow im not treating it like soil since it's basically a hand
watered hydro setup

Don't ever let coco dry out completely.
If you aren't using a very high quality coco, it needs to be well-rinsed before use to remove excess salts. That can cause symptoms similar to what you are seeing in extreme cases.
Use coco-specific nutes on the stuff, or at the very least, add calmag plus to your routine even if you aren't using ro water. It scavenges calcium and can cause trouble.

i've come to realize why my problems appeared so quickly and hard to get rid of is the fact
that i used yeast and sugar to create co2 and i've read many times before that it speeds
up the plant's metabolism so that must be why the problem was so bad right away