Wood and bark in the aquarium are ideal to combine with bottom dweller fish. These can scrape the wood and use the wood/ bark as a natural shelter. Wood/ bark also contains a lot of tannins which helps prevent diseases caused by fungi and bacteria.
Cholla wood is very suitable for use in aquariums with bottom dwellers, shrimps and crayfish. Cholla wood is full of natural nutrients and forms a good hiding place for small fish, shrimps and crayfish.