Marineland Eclipse Acrylic Aquarium System Top mounted, three-stage filtration system that has minimal rear space requirements for against-the-wall placement 100% water-to-media contact for excellent water quality, and a healthier environment for your plants and fish Easy to install and operate and provides unlimited, unhindered access to the entire aquarium Fluorescent daylight bulb is ideal for plant growth and ornamental fish color enhancement Available in 3, and 12 gallons, hexagonal 5 gallons and a corner 5 gallon Top-mounted 3-stage filtration system fits conveniently against the wall 100-percent water-to-media contact for excellent water quality Extra space for accessories like heaters or airline tubing (sold separately) Easy to set up, access, and operate Includes specially selected fluorescent daylight bulb