A full 20-gallon tank will weigh about 225 pounds (or 102 kg). Most 20-gallon tanks have dimensions of either 24” x 12” x 16” or 30” x 12” x 12”.

If you’re curious about keeping fish and considering buying a 20-gallon aquarium, you’ve come to the right place. It’s hard to know where to start when choosing fish, and tank size is just ...

The 20-Gallon Aqueon Glass Aquarium Tank is an affordable option with barely visible silicone edges that maximize the view. Best fish tank filter: Oase BioPlus 100 - See at Petco ...

Guppies are among the easiest freshwater fish to keep in an aquarium. You should get at least three and keep them in a tank that holds at least 1 gallon of water for every guppy.