Seachem Reef Carbonate 100ml is a specialised solution designed to restore and maintain the alkalinity of reef aquariums. This concentrated blend provides essential carbonates and bicarbonates necessary for coral growth, without depleting calcium, magnesium, or strontium levels. Proper alkalinity ensures healthy corals and a thriving aquarium ecosystem.

The formulation is distinctive, offering a pK of about 9.0 in saltwater, which aids in maintaining a stable pH level around 8.3-8.4. Such stability is crucial as aquarium environments can naturally drive pH levels down, impacting the well-being of coral and other marine life.

Designed for both beginners and experts, dosing instructions are straightforward. For novices, it involves using 1 capful per 80L twice a week, carefully adjusting based on regular alkalinity checks. More advanced users can implement continuous drip systems for precision in large or specialised environments.

It is essential not to overdose, as excessive alkalinity can lead to the rapid loss of beneficial elements. Always avoid mixing directly with calcium, magnesium, or strontium supplements to prevent any adverse reactions.

• Concentrated formula providing 4,000 meq/L of carbonates.
• Stabilises pH levels around 8.3-8.4 in reef systems.
• Does not deplete calcium, magnesium, or strontium.
• Simple dosing for all skill levels.
• Ideal for maintaining balanced alkalinity levels.

Choosing Seachem Reef Carbonate ensures precise control over alkalinity, an essential component of a successful reef aquarium. Supporting coral health through balanced chemistry, it is a reliable choice for both hobbyists and professionals seeking to maintain optimal aquarium conditions.

• Volume: 100ml
• Recommended Alkalinity: 3–5 meq/L (8–14 dKH)
• Compatible with all saltwater aquariums
• Made with carbonate and bicarbonate salts

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Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.