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Brown/black spots, leaf curling

Konvict

New Member
In a previous post that i stated that i was in the beginning of week 6 veg and i wanted to top them. well i woke up today and saw that my leaves were curling inwards... lengthwise along the leaf... and there were small blackish brown spots... ive only fed it twice using fox farm grow big. 1.5tsp/gallon.

I know that 1.5 is weaker than what i want to go, but my local horticulturist said to feed them at half strength for a whole gallon... Im assuming its either a pH imbalance or nute lock up...

Grow Specs...
Seed: 4 bagseed
Medium: Fox Farm Ocean Forest
Nutes: Fox Farm Grow Big
Lights: 2x 42W CFL (blue spectrum)
 

Konvict

New Member
bump... i need help
 

Be Irie

Nug of the Year: 2009 - Plant of the Month: Aug & Sept 2008, Dec 2008, Jan 2009 - Member of the Month: Feb 2009 - Nug of the Month: May 2008, Jan & Feb 2009, Nov 2012

Konvict

New Member
i shall report on that later... im headed out to the store today to get a pH reader... but in other related news, new growth is appearing on the damaged plants.
 

Be Irie

Nug of the Year: 2009 - Plant of the Month: Aug & Sept 2008, Dec 2008, Jan 2009 - Member of the Month: Feb 2009 - Nug of the Month: May 2008, Jan & Feb 2009, Nov 2012

Konvict

New Member
what does the lime do? also how would i apply that i havent worked with lime before.
 

Hogdady

Plant of the Month: June 2010 - Nug of the Month: July 2010
Dolomitic lime has been used extensively in agriculture to maintain ph stability. It is normally used as an amendment to the soil when you are preparing your planting mix. It can be added (top dressed) later, if desired. DO NOT use hydrated lime. Powdered lime is preferable, but pelletized will work. For cannabis, use 1/3 cup of lime to each gallon of planting mix. Also, if you are going to check your soil ph, do not attempt to test the soil. Soil ph is measured by checking the runoff. :)
 

Vapedogg223

Nug of the Month: June 2012
Dolomitic lime has been used extensively in agriculture to maintain ph stability. It is normally used as an amendment to the soil when you are preparing your planting mix. It can be added (top dressed) later, if desired. DO NOT use hydrated lime. Powdered lime is preferable, but pelletized will work. For cannabis, use 1/3 cup of lime to each gallon of planting mix. Also, if you are going to check your soil ph, do not attempt to test the soil. Soil ph is measured by checking the runoff. :)
Hey Hogdady,

Have you always used 1/3 cup of dolomite lime per gallon? That is much more than I usually see recommended. I'd like to learn more...
 

Hogdady

Plant of the Month: June 2010 - Nug of the Month: July 2010
Hey Hogdady,

Have you always used 1/3 cup of dolomite lime per gallon? That is much more than I usually see recommended. I'd like to learn more...
No, not at all. Musta been a senior moment. I use 3 tbsp per gallon, or a cup per cubic foot. Thx for catchin' that!
 

Vapedogg223

Nug of the Month: June 2012
No, not at all. Musta been a senior moment. I use 3 tbsp per gallon, or a cup per cubic foot. Thx for catchin' that!
No problem bro, happens to the best! One cup per cubic foot is what most of the books say, but I've seen some people use more, and I'm always trying to learn.
:peace2:
 
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