ImBettaThanCool
Aquarium Advice Activist
- Joined
- Sep 3, 2017
- Messages
- 118
Which substrate is better? Gravel or sand? I want to rescape my fluval chi a little bit and change up the current substrate i have. I narrowed it down to two choices. Black sand or black gravel. Now I know that gravel has the benefit of being able to grow beneficial bacteria (right?) but does sand have that ability too?