should I now change the nutrient to blooming phase

[Tony]

Hi Ron, Hi all, Iv'e been lurking recently and now have a ligit question. I am growing tomatoes in a 6 plant 2 litre bottle system, I transplanted 4 weeks ago, they have tomatoes about the size of a 1/2 dollar. It is now time to change the solution, I have had the solution set up for growing phase, should I now change the nutrient to blooming phase or keep the grow phase mix? I am using general hydroponics solutions. Thanks to Ron and this site, this is my 2nd growing season and it only gets better! Tony in Va.