tmurphy171
Aquarium Advice Activist
I have a penguin 330 that contains two media baskets. I'm thinking about using one of the baskets to house bio media. I read a few posts here about people losing their bio filter on the bio wheel if the power goes out. Since its that time of the year again and I can lose power in thunderstorms I want a "backup" bio filter that won't die if the power goes. Which would be better, filling the basket with Matrix Bio Media or a sponge?