Banana leaves are widely used in the Asian continent by Betta fish breeders and shrimp breeders. They are used in similar ways to the Catappa leaves as they release humic substances and tannins.
Banana leaves contain important and valuable fiber for shrimp, crayfish, crabs and snails and, above all, provide an important basis for a nutritious biofilm that is often grazed by shrimp and snails.
These leaves tend to initially float when added to the water but will sink within a few days. They release tannins and other humic substances over a period of 2-3 weeks.
These leaves can be left in the aquarium as invertebrates tend to continue foraging and consuming the decomposing leaves over time.
We typically recommend to add 2 Banana leave pieces to every 10L of water. However, adding more leaves will not negatively impact your water parameters or quality.