7 week Flowing Leaves dying Top Down

[Assault591]

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.

 

[iPACKEDthisBOWL4TWO]

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.

 

[hazorazo]

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

 

[Assault591]

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

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?

 

[Kingrow1]

I would have said nute burn too.

 

[Punk]

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