Aqueon PURE Betta Beads contain beneficial bacteria that help maintain a healthy environment in unfiltered aquariums. The beneficial bacteria aids in maintaining a balanced environment while the enzymes help breakdown organic sludge for better water clarity. These soft biodegradable balls create a fun enrichment activity for bettas while also encouraging their natural foraging behavior. Watch your betta play in the beads like a fun ball pit as they dive in and out. Add 1 pouch of betta beads per 1 gallon of water.