I was looking at the Maxigro/bloom labels, did they tell you that once you started getting fruit to drop to a 1gro:2bloom?
Just looking at the Floramato with it's high N rate would think you could just 50:50 the gro:bloom mix even while fruiting for indeterminate tomatoes. Or did i miss read what you said and that's what you were saying just continue a 50:50 for inderterminate plants?
I did find this tho.
http://www.genhydro.com/genhydro_US/GH_Feed-Chart.pdf
Goes along with what you were saying.