Aqua Natural Red Flint Aquarium Gravel

Aquascape with Red Flint River Gravel Pebble Size: 4-6mm Deep Red Coloration Minimal Effect on Water Chemistry Red Flint river gravel is a deep red substrate, giving a unique look to any freshwater aquarium. It can be used as a cap layer for a planted tank or simply used by itself ...Aquascape with Red Flint River Gravel Pebble Size: 4-6mm Deep Red Coloration Minimal Effect on Water Chemistry Red Flint river gravel is a deep red substrate, giving a unique look to any freshwater aquarium. It can be used as a cap layer for a planted tank or simply used by itself if you're not using a separate plant-specific substrate.

The 4-6mm pebble size allows for a massive amount of surface area for the colonization of beneficial bacteria.