Flora is great by itself. But make sure you shake the bottle real good each time you use it, and I mean really shake it up. Shit is thick and a lot of people on this forum whine about that, but shit works well if you shake it.
My bad I'm referring to Flora nova. I often forget that the 3 part is the flora line.
There are cats on here that use just the 3 part and no additives.
When running GH in hydro, we would run a cal-mag(growtek's is cheapest, works fine) and kool bloom(liquid) and occasionally run either floralicious or florablend never both.