Brown spotting on leaves

Staroftroy

Staroftroy

Member
IMG_20101010_192838.jpgIMG_20101010_194003.jpgIMG_20101010_192847.jpgIMG_20101010_192830.jpgIMG_20101010_192824.jpgThanks for any knowledge about this problem.

This is a white widow grown from seed in Fox Farm Ocean Forest soil using Big Grow nutrients. This is the first week under the 400 Watt metal halide lamps. There are 4 plants in the closet and they're being watered a cup a day. Temp is running pretty high, about 95*F and humidity about 30*.

I had another grow in this room and had the same problem with the leaves it eventually spread to the other plants in the room.

It's this weird brownish stuff in the leaves. What can I do?
 
C

cruzer101

Well-Known Member
fungus? most likely a mildew of some kind.
Looks to me like you got bugs, not spidermites though, maybe thrips. google it.

edit: nevermind
 
Staroftroy

Staroftroy

Member
I don't think it's thrips I've inspected pretty closely and the damage doesn't seem to be the same as it would be if it were thrips. I've been applying Einstein oil for a while too. Maybe that has something to do with it?
 
C

cruzer101

Well-Known Member
I suppose by using the oil you have used it with water and have increased the amount of humidity, with the cooler temps at night that mat cause the mildew. I had that powdery mildew and used a reptile ceramic heater in my cab, screws into a regular light socket, put it on a timer and ran it at night. That helped some.
 
Fluxcap

Fluxcap

Active Member
I had the same problem it is caused by a deficiency, one of the Micro nutes, Calcium I believe. mine was caused because my plants were root bound and the ph (in my Ocean forest soil) was to low. Check to see if they are root bound. Always water with a ph of 7. Buy a bag of dolomite lime, the finer the better, don't get the chunky stuff it takes to long to brake down. You can mix it in your soil when you transplant, or mix it in your water, although I do not personally know how to mix it with water. The lime will take care of any deficiency and hold your ph at 7.
 
bonjo78

bonjo78

Active Member
i dont want to sound like a dick but the soil seems fucked up , mg lockout due to excess ca maybe ?

are the big white chunks perlite ?( they will shatter when pressed hard if it is )
 
bonjo78

bonjo78

Active Member
Fluxcap said:
I had the same problem it is caused by a deficiency, one of the Micro nutes, Calcium I believe. mine was caused because my plants were root bound and the ph (in my Ocean forest soil) was to low. Check to see if they are root bound. Always water with a ph of 7. Buy a bag of dolomite lime, the finer the better, don't get the chunky stuff it takes to long to brake down. You can mix it in your soil when you transplant, or mix it in your water, although I do not personally know how to mix it with water. The lime will take care of any deficiency and hold your ph at 7.
Click to expand...
i dont know much about fox farm soil except the fact that about the half threads in this section ( plant problems ) use this ... once the ph goes low calcium disolves more and this is driving a mg lock , raise the ph or better get a better soil ...
 
L

Los Muertos

Active Member
bonjo78 said:
i dont know much about fox farm soil except the fact that about the half threads in this section ( plant problems ) use this ... once the ph goes low calcium disolves more and this is driving a mg lock , raise the ph or better get a better soil ...
Click to expand...
Used FFOF for my first grow and it tested 5.3 right out of the bag! I know a lot of guys dig it, but I don't think I'll use it again.
 
L

Los Muertos

Active Member
cruzer101 said:
Thats because it is PH balanced. meaning you use tap water at ph of 7.0 and it balances out.
Click to expand...
I tested the runoff of 7.0 through the FF and it came out 5.3. It's possible that I just got a bad batch though.
It looked like the bags had been sitting around for quite a long time too. Maybe that had something to do with it.(?)
 
Staroftroy

Staroftroy

Member
I'm using tap water and letting it sit out overnight.

Don't anyone worry about being a dick! This is only my 3rd grow ever and I still don't know a whole lot so go ahead and call it like you see it.
 
You must log in or register to reply here.
Top