Best Seller | Bio Stratum Aquarium, 8.8 lbs., Medium, Green How do you keep your aquarium looking fresh and clean without constantly doing water changes? Say hello to Fluval Bio Stratum Aquarium! This amazing product is infused with beneficial 'bioactive' bacteria that breaks down waste and kickstarts the... ... more Bio Stratum Aquarium, 8.8 lbs., Medium, Green How do you keep your aquarium looking fresh and clean without constantly doing water changes? Say hello to Fluval Bio Stratum Aquarium! This amazing product is infused with beneficial 'bioactive' bacteria that breaks down waste and kickstarts the... Petco.com | | $20.75 go to store |