whats wrong with this leaf

does anyone know whats wrong with this leaf is it overwatering? View attachment 1055649

too hard to tell anything just from looking at a leaf. A pic of the whole plant would serve much better in trying to give a diagnosis.

its only this one leaf, and maybe starting on more.

possibly looks like the Ph is too high... have you ruled this out?

carokann said:

its only this one leaf, and maybe starting on more.

Click to expand...

like i said... i need to see more. I can see no leaf stems, nor how the plant is behaving. A pic of the whole plant will help much more. even then i'm bound to ask you more questions.

no i dont check the ph, too expensive. is ph the temperature of the soil?

No, Ph measures the acidity of your soil. The lower the Ph, more more acidic. The higher the Ph, the more basic. Every nutrient has a range of Ph that it is available to the roots in, and a range where it is locked out. I know a Ph tester isn't cheap, but in my opinion it is the best investment you can make in the health of your plant. I don't care how good your lights/fans/hoods/soil/etc is.... if your Ph is not correct your are going to have shitty results. you can Ph papers and a cheap testing kit at most hydro stores. Not as accurate as a digital, but it will still tell you if your Ph is high or low, and then you can attack the problem correctly. Tell my more about what kind of soil you are using and what nutes you use along with your feeding schedule. Maybe we can narrow it down.

Use this... its an amazing tool and discusses the Ph availability range for each nutrient.

http://www.icmag.com/ic/showthread.php?t=11688

nice link, thanks. from the pictures it looks like phosphourus deficiency. i gave it a bottle of water and mg soluble 24-6-18. thats not much potash is it.