Humm,disease?

hello i noticed this on my plant.. is it a disease?
i have loads of those yellow leaves...it has always happened since the begining of my plant,already fixed ph but still the same

Soil? nutes, stage, lights,etc? pics of whole plant

ok sure,i'm outdoors,only use compost tea and what is that bown thing on the tip of the leave?

Severe undernutrition. N is obvious, but P, K and Mg are also lacking. cn

Hungry is my guess N and probably P.

thank you i'm going to try to fix it.My clones leaves are also getting those yellow leaves

do you think these nutrients will fix the probs? http://www.ak47bob.com/lojaonline/index.php?page=shop.product_details&flypage=flypage-ask.tpl&product_id=994&category_id=60&option=com_virtuemart&Itemid=2
Click "ampliar imagem"under the image

Those are very good nutes. Do you have good, low-ec water? cn

cannabineer said:

Those are very good nutes. Do you have good, low-ec water? cn

Click to expand...

don't know how is my water ec, i can't afoord ec tester