Best sand cap for dirted tank?
What's a good black sand substrate for a dirted tank? Something that doesn't affect water chemistry, allows air and water circulation between the dirt and the water (not too fine/compact to suffocate roots or dirt), keeps dirt down and looks good? Any personal recommendations or suggestions?
I heard about fluorite black sand but isn't that messy/dirty and sharp? What about Carribsea instant aquarium Tahitian moon gravel or Carribsea super naturals Tahitian moon sand?