Alder cones are the one of the best Botanicals for reducing pH and increasing Tannin acid in an aquarium. Just a few cones can help bring about a deep rich tea colour, comleting a South East Asian or South American Blackwater tank. For breeding softwater fishes, a few alder cones can help to reduce fungus on eggs and will even aid int eh spawning of obligate blackwater species!
 
Our cones are harvested from Alders (Alnus spp.) and are ready to use right away!