Growing bamboo or bamboo-like plants (such as lucky bamboo, South American green bamboo, etc.) in a betta fish tank can create a natural landscape and provide ecological benefits. Here are the key points and considerations:

"Bamboo" plants suitable for betta fish tanks
Lucky Bamboo
Its root system can absorb harmful substances like ammonia and nitrogen, forming a symbiotic relationship with betta fish.
Choose hydroponic varieties to avoid rot; it is recommended to change 1/3 of the water every week.
It provides hiding spaces, reducing the aggressiveness of betta fish.
South American Green Bamboo
It is a shade-loving aquatic plant that does not require light or carbon dioxide, making it suitable for the betta fish tank environment.
Its leaves are tough and not easily damaged by bettas, and it has a significant effect on purifying water quality.
Matching suggestions
Container selection: It is recommended to use a fish tank of 30cm or larger, with 3-5 lucky bamboos for a single betta fish.
Landscaping tips:
A combination of driftwood and green bamboo can simulate the effect of a bamboo forest.
For waterfall filtration, the water flow intensity needs to be controlled (betta fish prefer still water).
Maintenance points
Water quality management: Change 1/3 of the water every 3 days in summer, and can extend to once a week in winter.
Feeding control: Avoid overfeeding, as residual feed can easily pollute the water quality.
Plant pruning: Regularly clean up overgrown root systems to prevent them from affecting the fish's living space.