You can have up to 6 additional email accounts in Comcast besides your primary account. Sign on to your primary account and click on the Users & Settings tab at the top of the page. You should see a link in blue underneath your user name that says Create Secondary User.
Causes of Yellowing Leaves. Common causes of yellow leaves on tomatoes include cool soil, age-related death of the lower leaves and a myriad of nutritional deficiencies including nitrogen, boron, potassium, iron and magnesium. Leaves may also yellow when affected by fusarium wilt, bacterial wilt or verticillium wilt.
Purple under leaves of tomatoes is a trait of phosphorus deficiency. This is the most telling trait of that deficiency. The yellowing of seedling leaves (lower part) is the deficiency of a mobile nutrient. The plant takes the nutrient from the lower leaves and moves it up to the growing portion at the meristem. Phosphorus is a mobile element.