Spots on leaves

T

The dankist

Member
I got some spots only on one of my plants, when I purchased the seeds it was considered to be a advanced strain to grow and it has proven to be difficult. I have 2 white widow plants and 1 purple kush plant currently flowering. Since it’s first sprout the purple kush has been a headache. After trying various different things I finally got it growing healthy but now after a few weeks of flowering the plant is developing brown spots on some of its leaves. I’m not an expert but I figured this is kinda soon to develop such symptoms even in flowering. The plants will be 3 months old on May 7th. They prolly should be a lil bigger then what they are but they all got stunted in growth for about 2 weeks while I was on vacation. Any help would be appreciated. Both my white widow plants are doing awesome it’s just the purple kush that’s giving these symptoms. Also, is there a rule or a way to tell how much soil I need vs the size of the plant? My current containers hold 1 and 1/4 bag of soil. I use fox farm ocean Forrest soil. I’m using 2 1500w bestva LED lights.
 

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T

The dankist

Member
I don’t think it’s that, I use a watering can and I always water as close to the dirt as I possibly can so that I don’t leave water on the leaves. Out of 3 plants it’s the only one doing it and it’s the only one of that strain.
 
O

ozziebud

Well-Known Member
is it getting condensation on leaves when lights out beacuse temperature change then when light comes on maybe burning
 
Dr. Who

Dr. Who

Well-Known Member
First take pictures under NORMAL lighting!

No blurple or HPS lighting please!

I gotta see what they look like in REAL life!

What are your temps and RH...lights on and off?
What do you feed and how much?
 
Dr. Who

Dr. Who

Well-Known Member
SheeshM said:
What are you feeding them and how's your ph going in and coming out?
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??? What media? pH of "run off" in soil.....not a good way to meter soil pH.

Soil self pH's
As long as your not regularly pouring in anything over 8 or under 5....Your gunna be ok....

If your anal about what pH is going in your soil and when....

Simply pH all in-going solutions to 6.5 in veg and 6.7 in bloom..
 
T

The dankist

Member
I don’t feed them any nutrients I usually just repot them every couple weeks in to a bigger pot with more fox farm soil. During the day the temps can reach around 82 degrees while lights are on. Some times at night when lights are off it can drop down to around 60. I have a ph tester but from research I’ve done said I didn’t have to worry about it too much since I’m using soil. My pots bottom parts are closed off so it’s difficult to read water coming out. I’ll tilt the pots over next time I water to get the ph of the out coming water. I use RO water. I’ll also take some photos in normal light
 
Stoptalkingtome

Stoptalkingtome

New Member
The dankist said:
I don’t feed them any nutrients I usually just repot them every couple weeks in to a bigger pot with more fox farm soil. During the day the temps can reach around 82 degrees while lights are on. Some times at night when lights are off it can drop down to around 60. I have a ph tester but from research I’ve done said I didn’t have to worry about it too much since I’m using soil. My pots bottom parts are closed off so it’s difficult to read water coming out. I’ll tilt the pots over next time I water to get the ph of the out coming water. I use RO water. I’ll also take some photos in normal light
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You don’t have to do all that. Fox farm doesn’t require the water to be ph’d. I used to do it for years. I quit and I can tell you it makes no difference.
What do you mean your pots bottoms are closed off?
 
T

The dankist

Member
Here is some better lighting photos. Some with my flash on some with out.
 

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Dr. Who

Dr. Who

Well-Known Member
The dankist said:
Here is some better lighting photos. Some with my flash on some with out.
Click to expand...
The dankist said:
I guess my pots do have holes in them but there really tiny. These are a smaller version of the pots they are currently in.
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Cut holes along the bottom edge! I would suggest using a drill with half inch or as large as you can, less then that half inch on the bottom sides of the pot. 5 holes please.

You have a nutrient retention issue causing high N with low Ca..

pH related due to the holding of liquids in the pot.

Start pHing your ingoing to 6.5 and add a good Ca/Mg at 5ml per gallon.....I suggest G&H CAliMAGic for the type of Ca they use and it's relation to your issue.
 
T

The dankist

Member
Dr. Who said:
Cut holes along the bottom edge! I would suggest using a drill with half inch or as large as you can, less then that half inch on the bottom sides of the pot. 5 holes please.

You have a nutrient retention issue causing high N with low Ca..

pH related due to the holding of liquids in the pot.

Start pHing your ingoing to 6.5 and add a good Ca/Mg at 5ml per gallon.....I suggest G&H CAliMAGic for the type of Ca they use and it's relation to your issue.
Click to expand...
Ok I’ll sefibrily give that a try. Do I need to do that too all my pots? Or just the one strain having issues. Both my other plants look 100% perfect.
 
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