National geographic has black coarse sand. I have it, got it at petsmartI'm looking for a black substrate that has 1mm-2mm grains so larger that your typical sand but smaller than your typical gravel. Does anyone know of any good brands that sell something of that size and in a blackish color?
I have seachem flourite black and its an excellent substrate
I have this in my tank at the moment. Looks beautiful :]
https://www.bigalspets.com/carib-se...Xy5tPftxThbEyjdvFnlbWZcMs0PmHtpbjoaAgSv8P8HAQ