Experienced grower stumped on a leaf issue.

Here lighting, you might learn something and not give out false information on chlorine
http://boards.cannabis.com/plant-problems/196483-chlorine-overdose.html

I've had similar results when using Happy Frog. The problem usually doesn't show up 'till a little later in the plants life though. It seems that the problem in my case was the irrigation water had a pH a little too high and not enough naturally occurring calcium in the water. I adjusted the pH to 6.5 and a small amount of Cal/Mg every other watering. The main varieties that I had a problem with were the OG Kush/Sour D. family and their various offspring. This may not be the right advice for your problem but the marks on the leaves look like the Calcium deficiency the I've experienced. Good luck

Lmao I'm wondering about the chlorine

This is my first run with happy frog and i was told it was NPK neutral.

I'm thinking it has to be mild ca/mg. No probs on any others with same conditions but this is my only Blue cheese so i have no real basis for comparison.

DAT would be a Mag def ^.^! Take care of it ASAP so it doesn't lock out your calcium. The closeups you showed confused me, because they look to be early magnesium deficiencies. The leaves closer to the center of the plant are totally magnesium deficient, in my opinion.

WindyCityToker said:

Lmao I'm wondering about the chlorine

This is my first run with happy frog and i was told it was NPK neutral.

I'm thinking it has to be mild ca/mg. No probs on any others with same conditions but this is my only Blue cheese so i have no real basis for comparison.

Click to expand...

In my experience chlorine is it is an unwelcome component in soil. Slightly necessary in very, very small amounts but it is unlikely that you will need to add any. If the water that you are using is artificially softened, as in with potassium chloride or sodium chloride then that water will probably lead to excesses that you don't want.

The Happy Frog isn't really NPK neutral but they do add Dolomite Lime and that is designed to help keep the soil pH neutral for a while for the wide range of water types of the people who use the product. I have found that is often best not to add any NPK rich nutrient to plants that have been recently potted in the HP soil or the Ocean Forest line as well. Fertilizer soon after transplanting has caused noticeable fluctuations in pH, Ca and Fe uptake and has been a real pisser. I give it about 2-4 weeks before adding N especially.

As it's only one variety without controls I would wager that it will work itself out we'll never know what happened. Peace

Yup just gonna let it ride "The Universe tends to unfold as it should"