Name that deficiency...

phoenixaflame

Active Member
I'm guessing there's something missing from what im giving my plants. they are a month and a half old, fox farm ocean soil, i use filtered water (from the watermill), GH Maxigrow dry nutrients at the ppm and ph levels, and weekly blue mountain organic's super plant tonic. i thought that was a pretty decent recipie for happy plants, yet i'm getting this kind of discoloration and a cracker-dryness on the lower and mid-lower fan leaves. after lurking around old forums im thinking it's calmag problem? what do y'all think?:peace:

http://i37.tinypic.com/2lwvt7a.jpg
http://i34.tinypic.com/fom787.jpg
 

brasmith

Well-Known Member
Could you list what all your food has and the npk values? Do you have a pic of the entire plant, that would really help to see what the whole plant is doing? Also, what is your ph?

But, from the looks of the leaf it loks like ph spotting combined with nute burn.
 

phoenixaflame

Active Member
i've not come across that guide before. thanks! i think the problem is PH. my run off on 3 out of the 4 was around the 5.5 area. where 1 of them (the worst looking) was around 4.9. I hadn't been checking the "run off" water and didn't know the PH levels for soil. which seem to be from 6.5-7. I'm flushing the plants with higher PH adjusted water for the rest of the week or so to see if that doesn't help. i'll take pictures soon as possible.

additional info:
How long has this problem been going on?
.for about three weeks now
What STRAIN are you growing?
."bubblegum"
What was the establishing technique? (seed or clone?)
.seed (trying to grow moms)
What is the age of your plants?
.a month and a half
How long have they been in the soil mixture they are in now?
.since they were two weeks
How Tall are the plants?
.about a foot
What PHASE (seedling, vegetative or flower) are the plants in?
.vegetative (again, trying to raise moms)
What size pots are you using? (Include how many subjects to pot)
.roughly 37L heavy blackplastic pots
What substrate/medium are you using? What brand of soil mixture are you using?(percentage of perlite, vermiculite...etc?)
.fox farm ocean forest
What Nutrient's are you using?
.GH Maxi Grow dry nutrients 10-5-14
How much of each nutrient are you using with how much water? *Knowing the brand is very helpful*
.i make a solution of ~850 ppm in 1 gallon of water and divide that gallon equally between the four plants
How often are you feeding?
.after every two waterings
What is the TDS/EC/PPM of your nutrients used?
. from 850ppm - 900ppm
What is the pH of the "RUN-OFF"?
.this is likely my problem, its been at 5.0 - 5.5
What method of pH test was administered? Using Strips? pH pen?
.hanna combo pen
How often are you watering?
.every other day. one of them i water once a day because its in a clay pot (i know, i need to get it out of there ASAP, i just dont want to kill it in the process of doing so)
When was your last feeding and how often are you feeding?
.friday. after every two waterings.
What size bulb are you using?
. 400w MH 18/6
What is the distance to the canopy?
. ~7in
What is your RH Factor? (Relative Humidity)
.35%
What is the Day/Night Temp? (Include fluctuation range)
.high 70s low 80s
What is the current Air Flow? (cfm etc.)
.a few fans. seems to keep things moving
Is the grow substrate constantly wet or moist?
.i try to keep it moist
Is your water HARD or SOFT?
. i use the filtered watermill water
Has plant been recently pruned, cloned or pinched?
. i topped them and am in the process of finding out the gender of the plants from the topping cuts i made.
Have any pest chemicals been used? If so what and when?
.no, no pests


again, im sure my problem is the PH. im still a newb, and still learning. hopefully i didnt make any irreversible mistakes! thank you all for your speedy help!
 
Top