If you're looking for a simple starter aquarium, check out the All-In-One 4 Gallon Globe Aquarium. Made of durable acrylic, it’s an easy way to keep 3 to 4 minnow-sized freshwater fish. Maintenance is easy, too — simply replace the filter cartridge every six weeks, and change a third of the water every two weeks. Includes LED lamp, low-voltage pump and everything else you need to get started. Just add water and fish. Available in black or silver. Please allow 1-2 weeks for delivery.