7 week Flowing Leaves dying Top Down

7 Week flower, room is kept at a constant 80 degrees Fahrenheit, a box fan pointed towards the ceiling to bring the heat down, as well as a carbon air filter to circulate air. I ran out this morning and bought two 5lbs bags of organic dolomite lime (garden lime at home depot). It looks like a nitrogen or potassium deficiency. Suggestions on what do to to save? The other 3 plants are doing great and look fantastic, have a comparison. The 2nd to last pic is the healthy plant. 2 weeks behind the one with the dying leaves. I threw a tablesppon of the dolomite lime into the plant already and poured a little to water to seep in. PH shows that its at about 7.5, used Miracle Grow Potting Soil with advanced moisture control.

7.5 is too high for soil bud. Are you adding water at a Ph of 6.5? If not this could be your prob. This late in flower, leaves will start turning so this could be normal but your high Ph is alarming.

I agree, ph is high, and may even be some nute burn.

hazorazo said:

I agree, ph is high, and may even be some nute burn.

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It is not nute burn, stopped that 2 weeks ago, as I noticed the the tips starting to yellow up the very tip of them though.


Should I add more dolomite?

I would have said nute burn too.

Clearly nute burn, there's no where near enough lighting for this plant to even need any significant nutritional additives.