CAN ANYONE HELP ME TO FIGURE OUT THE RATIO OF NUTRIENTS?

HEY,
I JUST STARTED MY FIRST GROW EVER. I AM IN THE VERY BEGINING OF THE SECOND LEAFING STAGE. CAN ANYONE HELP ME TO FIGURE OUT WAT IS THAT BEST FURTLIZER FOR MY PLANT. I AM USING SOIL BASE MEDIUM FOR GROWING. MY PLANT IS UNDER A 45W LIGHT TWO ICHES FROM THE TOP. i AM ALSO USING AN YEAST CO2 SYATEM WHICH IS WORKIN GREAT. I WOULD LIKE TO KNOW IF 18-24-26 WOULD BE THE RIGHT AMOUNT?

Could you clarify what you mean by the second leafing stage? The plant is getting its second set of leaves?

Remember, no nutes for the first 2 weeks. After that, its ok to feed it about 1/2 or 1/4 the recommended manufacturer dose of veg nutrients. In the vegetative stage you want a higher nitrogen to phosphorus ratio, I use FoxFarm's Grow Big which is 12-7-7. Then about a week or 2 after you switch to flowering you change to nutrients that are higher in phosphorus and lower in nitrogen, like the FoxFarm Tiger Bloom I will be using (2-8-4). Just remember, its really easy to over-feed a plant, which is harder to correct than not enough nutes. Start off slow and work your way up. Here's a link with a little more info, and look through the grow faqs. Also, the second link is to a site that helps diagnose plant problems, like specifically what element your plant is lacking or has too much of.

http://www.a1b2c3.com/drugs/mjgrow9e.htm
http://www.drugs-forum.com/growfaq/97.htm

Also, if you only started one plant, you might want to start another to increase your chances of getting a female, cause it would blow to put all that effort in and come out with only a male.