About This Clear for Life Aquarium The Clear for Life Pentagon Aquarium has a geometric appeal with its perfect cube design. Choose between two acrylic tint options in 25- and 60-gallon sizes, based on availability. Clear for Life Aquariums are made from acrylic, which offers greater aesthetic beauty than glass. Acrylic aquariums are also 50 percent lighter, 40 percent brighter, and 17 times stronger than glass, giving them a distinct advantage. Complete your fresh water aquarium system (scroll down to purchase accessories): Filter - This keeps your aquarium clean. Use a hang-on style filter for aquariums under 50 gallons; consider a more powerful canister style filter for larger aquariums