Magnum auto in FFOF week 6 - deficiencies?

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denoran

Member
This is my first grow. Magnum autoflower in Fox Farms Ocean Forest week 6.
I began feeding one week ago each plant got 1 tbsp Dr. Earth tomato, veg, herb
My PH meter is broken. I have been watering with soft tap water left out over night.

Flowering well, is it normal to see all these leaf issues at this stage?
 

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MannyPacs

MannyPacs

Well-Known Member
No that's not what I would consider normal. What size are your pots? U could try making a tea with the dr e and hope u can keep her green enough to limp across the finish line.
 
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denoran

Member
Municipal treated river water.
I haven't had it tested recently, but I think it is relatively stable.
Here was my last test:

PH: last week meter reading says 7.4, meter won't calibrate now, I don't trust it.

Ward Labs tested sample 2016:
Total Dissolved Solids (TDS) Est, ppm 85
Electrical Conductivity, mmho/cm 0.14
Cations / Anions, me/L 1.4 / 1.1
ppm
Sodium, Na 12
Potassium, K 1
Calcium, Ca 12
Magnesium, Mg 3
Total Hardness, CaCO3 43
Nitrate, NO3-N 0.8 (SAFE)
Sulfate, SO4-S 3
Chloride, Cl 10
Carbonate, CO3 < 1.0
Bicarbonate, HCO3 33
Total Alkalinity, CaCO3 28
"<" - Not Detected / Below Detection Limit

Thanks for your attention Budzbuddha; I took my direction from your post below, I forgot to mention I added about 25% perlite.

FFOF ( Fox Farms Ocean Forest ) made Simple - Autoflower

This thread was created to help those who seem to overthink the ease of use of this highly ammended bag soil. I see many growers both new and experienced seem to post “ issues “ when trying to run this medium. I am merely showing a simple no frills method of container / bag grows for autos...
www.rollitup.org
 
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Budzbuddha

Budzbuddha

Well-Known Member
Remember that it will take a little time for dry fertilizer to break down. Top dress FFOF will work faster as it is already ( ready to use ) .
I am on the fence about river water but sounds just like everyday tap ( municipal ). No need to gas off water.

You don’t do that with other plants . I use straight from tap - my cali water is hard as shit - but it waters my grass and cats drink it.
Mine chimes in at 7.6 ( ish ) @ about 350 ppm. It pretty much covers the Calmag issues since it is hard water ( high calcium / solids ).

My other houseplants don’t care either.
 
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denoran

Member
OK! I can make a tea! Thanks all for helping this nubie!
I am outgassing out of habit because my peace lilies are sensitive to chlorine.
 
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denoran

Member
Got it! A regular plant that drinks like a fish, eats like a bear, suns like a sports illustrated model, and only lives 10 weeks;)
PS: also never had to worry about humidity except with orchids.

Edit: no disrespect! I truly appreciate the feedback!
 
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D

denoran

Member
Update: I suspect the issue was fungus gnats.
You can see one of the traps in the picture.
I thought they just ate fungus, but discovered the larvae nibble on roots too and cause leaf yellowing.
It kept getting worse. I used liquid Bacillus Thurigensis, No luck after 10 days.
Added a cup of diatomacious earth to water and they all seem to be gone after two days

Thanks!
 
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D

denoran

Member
Update; fungus gnats are resilient! They survived Thuricide BT, and diatomacious earth treatments.
I'm not going to buy more "stuff"
I guess I will just live with it until harvest.
 
D

denoran

Member
I learned something new.
Thuricide is wrong species of BT for fungus gnats.
Need Mosquito bits, which is BTi Bacillus Thurigensis israelensus
:wall:
 
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