Fert Skeggy

Hey guys im a week into 12/12 (indoors) and was wondering what a good fertilizing schedule would be, i got all my ferts from the guys at a local nursery who were sympathetic to my cause and they seemed to really know what was up and helped me out a lot... but anyway

during veg i used a basic 5-5-5 fert to just get things started and i was also using SuperThrive from transplant which i had heard works well from a lot of friends who have grown. right now however, i went to the same nursery and bought some stuff called UltraBloom by E.B. Stone plant foods (they're both dry ferts) with a ratio of 0-10-10. a friend of mine advised me to compound the 5-5-5 with the 0-10-10 for a ratio of 5-15-15, so i dont skip on the N completely which he says is a good idea during flowering and from what i read it should be cool but i wanted to see if there were any Veteran's out there who could help a brother out. so i guess im just wondering if this is a good idea and how often i should try to mix this stuff in, im no longer using SuperThrive and just plain old good fashion H2o, i water about every 3 days and i dont overdo it, i appreaciate the help fellas :thumbsup: