Fluorite regular seems to be a choice of locals in my city and as near as I can see(from first hand observation of their tanks) there are no issues with their planted tanks, mostly high tech with pressurized c02 and 3 watts per gallon are doing really well.
I experimented with flourite regular and Schultz Aquatic soil While the rooted plants anchored better in fluorite a little better than the Schultz Aquatic Soil, which can be overcome by layering some pool filter sand underneath the Schultz Aquatic Soil. There was virtually no difference in plant growth between the two. I fertilized the water column in both cases.
The nutrients in fluorite are not bioavailable to plants, so you will have no choice but to dose the water column and or use root tabs if you go with Fluorite regardless of the flavor. The only substrate which has nutrients bioavailable to plant roots for immediate uptake is ADA Aquasoil, but it costs an arm and a leg. In my experience, plant growth with ADA Aquasoil is superior to Fluorite or Schultz with or without water column dosing, c02 injected and non-c02 injected, low light or high light alike.