Seachem Equilibrium is a mineral supplement formulated to restore and maintain the ideal general hardness (GH) in planted aquariums. It contains calcium, magnesium, and potassium salts – essential minerals that support both healthy plant growth and fish metabolism. Free from sodium and chloride, it avoids the potential harm these elements can cause to aquatic plants at elevated levels. This makes Equilibrium particularly well-suited for use with RO (reverse osmosis), DI (deionised), or any mineral-deficient water source.

Key Features:

• Restores and maintains essential minerals for planted aquariums
• No sodium or chloride, avoiding harm to plant growth
• Suitable for RO, DI, or mineral-deficient water
• Supports fish health and plant development
• Available in 300g and 600g sizes
• Highly concentrated for efficient dosing

Equilibrium offers a reliable way to re-mineralise soft or purified water, helping to balance GH with carbonate hardness for stable water conditions. For KH stability, it can be paired with Seachem Alkaline Buffer. Its clean formulation and plant-safe composition make it a preferred choice for aquarists aiming for optimal growth in freshwater planted tanks.

Aquacadabra acts as credit broker/intermediary and not as a lender.

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.