Random Leaves Developing Brown/Black Spots

humusgumus

New Member
I'm growing autoflowering Amnesia Haze in soil, currently in flowering, in textile pots. I've been feeding water with at least 2 days in between, with nutes never over the specified values, sometimes feeding half, and sometimes none. I'm keeping my water pH between 6.2 and 6.7. Using a 600W led light on a 18-6 cycle. My humidity level was varying recently since flowering between 50 and 68. The temperature never went above 26 Celsius (78.8 F) and never under 21 C (69.8 F).

After finishing the vegetative state, the plant started developing brown spots followed by yellowing of the leaf. The appearance was not beginning from the bottom, just randomly, maybe the ones that received more light I'm not sure. I have two plants of the same kind, same age, but one of them is a dwarf and just now after 3 weeks in flowering started showing the same problems.

My guesses are:
- chlorine toxicity
- strange overwatering ( i haven't feed them for 5 days and the soil was plain dry and the leaves drooped after watering)
- nutrient problem ( should i try no nutrient?)
- my pH meter is broke?

I also found another interesting problem. I cut my textile pot on the side and the outer soil was dry about an inch and then wet. Is it possible due to my watering technique to have created water canals in the soil or something(I tend to put a lot of water at once) that may lead to these types of symptoms?

Thank in advance everybody.
 

Tim1987

Well-Known Member
I'm growing autoflowering Amnesia Haze in soil, currently in flowering, in textile pots. I've been feeding water with at least 2 days in between, with nutes never over the specified values, sometimes feeding half, and sometimes none. I'm keeping my water pH between 6.2 and 6.7. Using a 600W led light on a 18-6 cycle. My humidity level was varying recently since flowering between 50 and 68. The temperature never went above 26 Celsius (78.8 F) and never under 21 C (69.8 F).

After finishing the vegetative state, the plant started developing brown spots followed by yellowing of the leaf. The appearance was not beginning from the bottom, just randomly, maybe the ones that received more light I'm not sure. I have two plants of the same kind, same age, but one of them is a dwarf and just now after 3 weeks in flowering started showing the same problems.

My guesses are:
- chlorine toxicity
- strange overwatering ( i haven't feed them for 5 days and the soil was plain dry and the leaves drooped after watering)
- nutrient problem ( should i try no nutrient?)
- my pH meter is broke?

I also found another interesting problem. I cut my textile pot on the side and the outer soil was dry about an inch and then wet. Is it possible due to my watering technique to have created water canals in the soil or something(I tend to put a lot of water at once) that may lead to these types of symptoms?

Thank in advance everybody.
Hey mate.
Ph? Adjust
Ec? Adjust
Check for rot first....
How good is your drainage and airation?
Is it mushy and smelly at the bottom?
It may be suffocating.
Tim.
 

Tim1987

Well-Known Member
Hey mate.
Ph? Adjust
Ec? Adjust
Check for rot first....
How good is your drainage and airation?
Is it mushy and smelly at the bottom?
It may be suffocating.
Tim.
Are the textile pots sitting directly on a cold/hot floor? Are you sitting them above the floor?
So they can drain, and dont fester. Or catch salts at the bottom.
Good luck
Tim.
 
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