Aquarium Alder Cones for Natural Blackwater Care, pH Support and Shrimp, Betta & Tropical Fish Tanks

Aquarium alder cones offer a simple botanical way to create the soft, warmly tinted blackwater conditions enjoyed by shrimp, bettas and other tropical fish. Rich in tannins and humic substances, they slowly release beneficial compounds into the aquarium while encouraging natural behavior in fish and invertebrates.

These naturally sourced, sun-dried cones contain no pesticides or chemicals. Choose a 10 Pack or 40 Pack to suit your aquarium routine, using one cone per 10 gallons and replacing it every three to four weeks or after it has fully broken down.

Key Features

• The naturally released tannins and humic substances help lower pH, making it easier to establish soft blackwater conditions for suitable aquarium inhabitants.
• A gradual release adds a warm tint to the water, creating the natural blackwater appearance sought for biotopes and similar tank setups.
• The cones encourage natural behavior in fish and invertebrates, bringing a purposeful botanical element to shrimp, betta and tropical fish habitats.
• Their bacteria-reducing properties support aquarium care, while their ability to help prevent fungal infections is especially useful around fish eggs in breeding tanks.
• Natural sourcing and sun-drying provide a straightforward aquarium botanical that is free from pesticides and chemicals.

Specifications

• Contents: Naturally sourced, sun-dried alder cones.
• Treatment: Free from pesticides and chemicals.
• Recommended use: 1 cone per 10 gallons.
• Replacement interval: Every 3–4 weeks or when fully broken down.
• Pack sizes: 10 Pack or 40 Pack.
• Suitable inhabitants: Shrimp, bettas, other tropical fish, and invertebrates.

Whether you are building a blackwater biotope or adding botanicals to an established tank, these alder cones bring tannins, gentle warm coloration and practical support to your aquarium routine.