Pained gravel substrate is one of the most popular substrates in the business. The reason for its popularity is the buyer can choose any color they want in their aquarium and it works for almost any type of aquarium. However these painted substrates have some bad qualities as well.
- Comes in all colors
- Easy to maintain
- No "dust/sand storms"
- Undergravel filter capable
- Will trap nitrates, thus causing nitrate spikes if not vacuumed regularly.
- Can lose it's color over time
- Chemically coated
- No nutrients is provided
- Too large for burrowing animals
- Difficult to grow plants