I would probably do well to review some material on the chemical interactions in the aquarium, so that I can get a bigger picture of what is happening with CEC, chelation, carbonate buffers, etc. I'm still not clear on the relationship between the reaction you are describing and how it affects the KH/pH CO2 chart.
Offhand, Flora Base/Aqua Soil would be in a lower layer under an inert substrate, in the same way I might use peat. |