krafty420

I used Fox Farms ferts for the first time and the plants seem to be growing fine except for what u see in the pics. These are about 2 weeks old. Planted in 100% organic soil with bone meal and blood meal mixed in. Ferted once at the 2 week date with the schedule provided by FF.Then foliar fed for a couple days until I noticed the discoloration. These are all White Widows in 1 Gallon pots.

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krafty420

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Freakshow68

I would think a deficiency of sort. What is the soil ph? What kind of soil are you using? With too much N, you get burning on the leaf edges, and a very dark green leaf. What nutes are you using?

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krafty420

I listed all the nutes on my original post. The soil is MG Organic Choice. The plants are much greener looking when not under 400W of MH lighting.

buzzmobile

I would be looking toward a magnesium deficiency. Iron, manganese, and magnesium deficiencies look similar. Iron and manganese usually affect the upper leaves first. Cannabis is notorious for magnesium defiency.

Time for a foliar spray of Epsom salts. As a curative use 1 Tbs/gallon H2O and spray both upper and lower leaf surfaces. Spray weekly for at least 3 weeks. Epsom salts will dissolve more quickly in warm water.

Beener

Hey krafty
There's more than meets the eye going on here. Please take the time to use the link in my signature called Nursery Questionaire. It will take you to a list(s) of questions (one for soil, and one for hydro). Copy and paste the proper list of questions back here in this thread, then answer as many as possible.
This will help immensely.

My guess is you have multiple issues going on at once. pH is always the 1st place to start looking. Did you allow the soil mix to "cook" after adding the bone & blood meals? Did you confirm the starting pH before planting?

Soil based organics will typically lower the pH considerably. It takes some time for them to breakdown and dispearse throughout the soil. During this time, pH fluctuation is high, and hot spots in the soil are present (hot spots are caused by decaying organics. As they breakdown in the soil, they actually generate heat. Even though it may seem slight to the touch, the heat generated can be sufficient enough to damage tender root systems).

Allowing the soil mix to rest for several weeks with periodic damping and mixing. Is referred to as "cooking". I've found that I need to cook my soil mixes for at least a month before using. Longer if I have the time.

Though I don't see major signs of burning....it seems as though you're using an awful lot of nutes. I believe that the Fox Farms soil is pre-fertilized with Guano, worm castings, kelp, etc.. The addition of Blood and Bone meals along with manually feeding bottled nutes is overkill.

Well, lets see that completed questionaire before we start to make suggestions

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Beener

buzzmobile

A lot of potassium will also restrict the uptake of magnesium.

Luminance

buzz is right -- magnesium/potassium are your culprits here. I've dealt with this recently, ended up having to balance out the two (in my case, there was a lack in both magnesium and potassium). toss in some epsom salts, see if that helps any...

-- Av

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Freakshow68

chekc the nute uptake charts in the FAQ. If your ph is too high or too low, you lock out certain nutrients.

__________________
You cannot help the poor by destroying the rich.
You cannot strengthen the weak by weakening the strong.
You cannot bring about prosperity by discouraging thrift.
You cannot lift the wage earner up by pulling the wage payer down.
You cannot further the brotherhood of man by inciting class hatred.
You cannot build character and courage by taking away people's initiative
and independence.
You cannot help people permanently by doing for them, what they
could and should do for themselves. - William J. H. Boetcker