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. Replace the beads monthly and remove uneaten food for optimal results. If betta beads shrink prematurely, this is a quick indicator that the water hardness is not optimal for your betta. We recommend changing the water with soft (deionized or specially filtered) betta waters. - Provides live beneficial bacteria and enzymes to maintain clear water - Great environmental enrichment activity for Bettas! Watch as they play in and out of the soft gravel like a fun ball pit - Soft biodegradable gravel encourages the natural foraging behavior of bettas for mental stimulation - Aids in maintaining a healthy aquarium by breaking down organic sludge for a healthy balanced environment - For use in unfiltered betta habitats. Add 1 pouch of betta beads per 1 gallon of water - For best results replace betta beads once a month (add 1 pouch per 1 gallon of water) and perform a 25% water change every 2 weeks - If betta beads shrink prematurely, this is a quick indicator that the water hardness is not optimal for your betta - we recommend changing the water with soft (deionized or specially filtered) betta waters