Product Overview Alder Cones promotes breeding and healing in shrimps. They are known to have anti-fungal properties. Alder Cones will also provide food for your shrimps and stimulates breeding. Reviews (1 review) Write a Review 1 Review Hide Reviews Show Reviews 5 great decorations Posted by Richard on 1st Jun 2018 This is a great buy. It looks really unique in the tank. I place these all around the front of the tank. It adds some contrast to the aquarium.