Not that small, no. It will cut down into 4 quarters for sure, but I don't know if you can get it down smaller. 1/4 treats 2.5 gallons. Also, this tank is too small for a betta who prefers 2-5 gallons of water, and requires a heater. When medicating, you also need a filter or aerator because medication is hard on the water quality. Your betta would probably improve better and quicker with a better tank and environment. Be sure to move him over gradually. Mix old water with new water slowly so as to not shock him.
Date published: 2017-12-18