Black alder cones are successfully used in aquaria. The cones have protective properties for roe. The black alder cones are also popular amongst fish keepers due to their acidifying (they lower pH in water) and disinfectant properties.
x 50 Alder Cones Aquarium Terrarium Vivarium Natural Botanical Decoration Food
x 25 Alder Cones For Aquarium Use Natural Water Treatment Good Decoration Food
x 100 Alder Cones Alnus Aquarium Botanicals | Blackwater Tannins | Shrimp | UK
x 200 Alder Cones Alnus Aquarium Botanicals | Blackwater Tannins | Shrimp | UK
