The exact weight of an aquarium will depend on many factors. First, there’s the weight of the tank itself. Then, there’s the weight of water, which is approximately 8.34 pounds per gallon.

Michael Parkey's 20-gallon aquarium, his first try at a planted tank. The author’s 40-gallon aquarium uses Texas limestone and easy-care plants.

FITS 20 GALLON AQUARIUMS: The mounting legs adjust from 24 inches to 30 inches to fit your specific fish tank needs, and the light strip holds up to 14 LED PODs. CUSTOMIZE COLOR: ...

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 ...

If you want more than one type of fish, you should probably just go ahead and get a 20-gallon tank, which is still “small” in the aquarium world. No, they don’t “grow to the size of their ...