Aquariums are like Tylenol, one is fine but you want 3. I started out digging out my old 55g. That week a 21g and a 4g were in the picture. Granted the 4g has 1 fish in it, and a hob
, a heater, air stone and proper substrate- no matter...once an aquarist, your counter space will decrease as additions of those glass walled, water-filled devices pop up like mushrooms. HOO-RAH!