bradleyheathhays
Aquarium Advice Regular
- Joined
- Oct 19, 2011
- Messages
- 69
What's the difference between the blue, black, green and red Poret foams? I'm ordering 2" sheets as they suggest for canister filters and noticed that while the 10 ppi is only offered in blue, the 20 ppi is offered in black, green and red.
Besides the red that has one side as ridges, what's the difference between these different color foams?
Besides the red that has one side as ridges, what's the difference between these different color foams?