Description
xFoundation for a thriving reef tank
Seachem Reef Fusion 1 and Reef Fusion 2 form the cornerstone of a two-part system that supplies essential calcium and alkalinity for reef inhabitants. When used together, Reef Fusion helps maintain calcium and alkalinity levels while delivering biologically appropriate trace minerals for a balanced water column.
Packaged as a concentrated pair of bottles (2 × 4 L / 1 gal each), the system is designed for straightforward mixing with a simple 1:1 ratio, reducing guesswork during routine maintenance and making dosing predictable for everyday reef-keeping.
What Reef Fusion does
Reef Fusion 1 provides a steady calcium source, which corals and calcareous organisms use to grow and build skeletons. Reef Fusion 2 supplies a calculated mix of carbonates and bicarbonates at a maintained alkalinity level (measured in meq/L). Used together, the system aims to restore and sustain the critical balance of calcium and alkalinity, while delivering trace minerals in biologically appropriate amounts.
- Provides 100,000 mg/L of ionic calcium
- Restores and maintains alkalinity
- Most concentrated two-part system; simple 1:1 ratio
Real-life use and benefits
In a busy home reef, Reef Fusion helps stabilize essential chemistry across a diverse tank, from soft corals to SPS and LPS. The straightforward dosing and predictable maintenance routine can support ongoing tank health without complex protocols.
Results depend on multiple factors, including stocking, lighting, and feeding. Keeping calcium and alkalinity within the intended range can contribute to healthier growth patterns and more predictable husbandry tasks over time.
How to use
- Follow the 1:1 mixing ratio: Reef Fusion 1 and Reef Fusion 2
- Measure and add to the display tank or sump as part of routine dosing
- Monitor calcium and alkalinity with reliable test kits and adjust as needed
What you get
This 2 × 4 L / 1 gal per bottle set is designed for extended reef maintenance, delivering calcium and alkalinity in a coordinated system that also supports trace minerals in biologically appropriate amounts.
FAQ
Q: What is Reef Fusion used for in a reef tank?
A: A two-part system delivering calcium and alkalinity in a simple 1:1 mix to support reef chemistry.
Q: How should I mix Reef Fusion 1 and 2?
A: Combine Reef Fusion 1 and Reef Fusion 2 in a 1:1 ratio, then dose according to your tank's needs.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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