sera alder cones (50 pcs.)- – Natural pH Reducer & Blackwater Conditioner
sera alder cones (50 pcs.)- – Natural pH Reducer & Blackwater Conditioner
Sera Alder Cones are a natural way to lower pH and create blackwater conditions ideal for many tropical fish species. They release beneficial tannins that help prevent fungal infections, support healthy spawning behavior, and promote species-appropriate environments. Perfect for soft-water and Amazon biotope aquariums, these cones also aid in the supportive treatment of fish diseases.
Easy to use—simply add 1 cone per 10 L of aquarium water. Safe, effective, and 100% natural.
We process and ship over 95% of all orders same day or next business day.
Dry Goods (Fish Food, Medications, Filtration Products, etc.)
Dry goods can be ordered any day and are typically shipped same day ornext business day. Delivery times range from 1–5 business days, depending on the destination and carrier.
Live Plants & Shrimp
Live plants and shrimp are shipped using the most appropriate UPS service and typically arrive within 2 business days.
Shipping Restrictions
We currently do not ship to Puerto Rico, Alaska, Hawaii, or international destinations.
Free Shipping
Orders over $25.00 qualify for free shipping within the lower 48 states of the U.S.
(Frozen Food, tanks and stand is pick up only or get a quote for local delivery option.)
Shipping Options (U.S. Lower 48)
We will select the most cost-effective method for delivery. This may include UPS Ground or FedEx Home delivery.
Transit times are estimates. Only UPS Next Day or 2-Day services are guaranteed.
Order Processing
- Orders placed Monday–Friday usually ship the same or next business day.
- Orders placed Saturday–Sunday typically ship on Monday.
- Packages are picked up Monday–Saturday by carriers.
- All orders ship from our retail store and storage facility in Bardonia, NY.
sera alder cones (50 pcs.)- – Natural pH Reducer & Blackwater Conditioner
Sera Alder Cones are a natural way to lower pH and create blackwater conditions ideal for many tropical fish species. They release beneficial tannins that help prevent fungal infections, support healthy spawning behavior, and promote species-appropriate environments. Perfect for soft-water and Amazon biotope aquariums, these cones also aid in the supportive treatment of fish diseases.
Easy to use—simply add 1 cone per 10 L of aquarium water. Safe, effective, and 100% natural.
A Wide Selection of Fish Tanks
At Rockland Aquarium, we offer a full range of aquariums to suit every level of hobbyist — from standard glass tanks and reef-ready systems to compact desktop setups. Whether you’re designing a small display or a stunning aquatic centerpiece, we have the perfect tank for your space and your fish.
With regular promotions and sales, you’ll always find exceptional deals on high-quality aquariums — built for beauty, durability, and long-term performance.
