Weird problem not all plants but not pests.

Tim1987

Well-Known Member
OP.
Something for you to consider is your PK. Mostly potassium.
I dont own any White Widow.

But.
I have ak - 47 x white widow. Its a total hore for PK after the stretch.
I forever ran base nutes only, NPK of 4-4-8, on its own. Just fine. Until recently when i changed my fertilizer to a 5-3-9.
To cut a long story short just that 1% extra nitrogen, meant i became deficient in potassium. I had to add PK to cut the Nitrogen back. Then my problem was gone.
Symptoms were just like yours.
Potassium serves a very similar purpose as nitrogen, and is a main antagonist for calcium and magnesium. If you're lacking potassium, it means you're lacking calmag too. Even if there's plenty already.

Imo give it a little to wait for any improvement.
But if it keeps getting worse, id say try flushing brand new. Then start at a lower ec, with added PK, and see how it goes.

Good luck :peace:
 
Last edited:

Flunkie91

Member
OP.
Something for you to consider is your PK. Mostly potassium.
I dont own any White Widow.

But.
I have ak - 47 x white widow. Its a total hore for PK after the stretch.
I forever ran base nutes only, NPK of 4-4-8, on its own. Just fine. Until recently when i changed my fertilizer to a 5-3-9.
To cut a long story short just that 1% extra nitrogen, meant i became deficient in potassium. I had to add PK to cut the Nitrogen back. Then my problem was gone.
Symptoms were just like yours.
Potassium serves a very similar purpose as nitrogen, and is a main antagonist for calcium and magnesium. If you're lacking potassium, it means you're lacking calmag too. Even if there's plenty already.

Imo give it a little to wait for any improvement.
But if it keeps getting worse, id say try flushing brand new. Then start at a lower ec, with added PK, and see how it goes.

Good luck :peace:
Ok I am flushing now, I ran the same exact nute regemin on green crack and they did great so I bet your right.

Thanks for the help
 

Xs121

Well-Known Member
Ok I am flushing now, I ran the same exact nute regemin on green crack and they did great so I bet your right.

Thanks for the help
What is the EC after you flushed or feed even?

I noticed that in your pics you have your plants in some plastic pots with hydroton, I bet you have a case of rising PPM thus unintentionally overfeeding your plants. Hydroton are notorious for holding on to nutrients that weren't used causing a build-up (salt) in the pot. You wont notice much the rising ppm because of your large reservoir.

You keep lowering your ppm but that doesn't resolve the issue because the problem is in the pot and not in your reservoir.

If I'm right, keep flushing with ph water at the top of the medium (basically washing the hydrotons). Keep removing the run-off until the run-off EC is where you want it to be.

Most ebb & flow set-up uses RW only, but have seen people using combination of hydroton and rw. You might have to wash your hydroton with ph water only at the top from time to time to prevent build up.

Just my 2 cents
 

Flunkie91

Member
What is the EC after you flushed or feed even?

I noticed that in your pics you have your plants in some plastic pots with hydroton, I bet you have a case of rising PPM thus unintentionally overfeeding your plants. Hydroton are notorious for holding on to nutrients that weren't used causing a build-up (salt) in the pot. You wont notice much the rising ppm because of your large reservoir.

You keep lowering your ppm but that doesn't resolve the issue because the problem is in the pot and not in your reservoir.

If I'm right, keep flushing with ph water at the top of the medium (basically washing the hydrotons). Keep removing the run-off until the run-off EC is where you want it to be.

Most ebb & flow set-up uses RW only, but have seen people using combination of hydroton and rw. You might have to wash your hydroton with ph water only at the top from time to time to prevent build up.

Just my 2 cents

I washed my hyrdryron off a couple times and I ran plain PhD water for a week, they are looking a little better but not like they should.....but I see improvement so hopefully that will continue,
Thanks for yalls help
 
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