Similar to a piece of cholla wood or other driftwood, these botanicals can leach a moderate quantity of tannins.

They are known to be high in tannins that lower the pH of your freshwater aquarium making it softer.

Beside providing a surface for bio-film and continuous nutrition for ornamental shrimps those caps can provide shelter for shrimplets.

Boil all botanicals for 60 minutes to remove germs, dirt, and debris. Allow your botanicals to soak in dechlorinated, ro or aquarium water overnight before placing them in the aquarium.

You can use the soaking water as dark extract since it contains a descent amount of beneficial tanins.