These yellow ares are on almost all my girls...anyone seen this before...I use fox farms mixed half and half with promix that is limed...temps hold around 80...nutes are general hydroponics...and I feed every watering semi heavy...but just switched to feeding every other watering...it only shows on the girls past three weeks in flower...some have only a spot here and there, some have a spot in the middle of the leaf...some are towards the top, some are in the middle etc...thanx friendly 420 people ..oh my strains are green crack, white widow, blueberry, ak-47, and maple leaf...