Yes I am agreed with you. FlouriteT is a special natural fracted stable porous clay gravel
Planted aquarium. Although it may be mixed with other gravels, FlouriteT is
Best as a complete substrate beds. Any mixture should be at least half
FlouriteT. Gravel modifiers such as literate are not necessary. FlouriteT is
Not chemically coated or treated and will not change the water pH.