If you were going to use one type of FloraNova for all stages, you would be better off using the Grow type, because it's the best balanced. If you look up standard hydroponic solutions, like "Hoagland Solution", you'll see that none use equal amounts of P and K. Simple reason, phosphorus toxicity, too much reduces growth. Actually, even the Grow formula is too high, like twice as high as optimal. Here's the Hoagland Solution, from
http://thcbiomed.com/topic/the-origins-of-liquid-based-concentrated-fertilizers-hoaglands-solution/
Macro and secondary nutrients.
• N 210 ppm
• K 235 ppm
• Ca 200 ppm
• P 31 ppm
• S 64 ppm
• Mg 48 ppm
Micronutrients:
• B 0.5 ppm
• Fe 1 to 5 ppm
• Mn 0.5 ppm
• Zn 0.05 ppm
• Cu 0.02 ppm
• Mo 0.01 ppm
With commercial nutes, whatever the numbers are on the label you pretty much multiply by 20 to get the ppm which results from 2 g or ml of nutes per liter/quart of water. So let's say you used FloraNova Bloom. 2.5 mls per liter as they recommend, with their numbers of 4-8-7, it would produce 100 ppm of N, 200 P and 175 K. Looking at the Hoagland Solution we see that it calls for 31 ppm P. Obviously 200 is excessive. For tomatoes during reproductive growth they only call for 47 ppm P.
So anyway, I'm pretty sure FloraNova Bloom is overdoing it on the P. Advanced Nutrients don't use that high a level and nobody complains, except about price and purity. I personally get higher yields using GH MaxiGro for all stages than I did with FloraNova Bloom. They also have a MaxiBloom but I don't use it.