Strontium is a macro element which is present in all reefs around the world.  
Although its physiological effects are still being studied, there is evidence that impacts on health of animals. Strontium is associate to calcification of coral skeleton and general coral health and therefore important for maintaining good growth and coral health.
Strontium is a macro element that gets depleted from the water in our tanks fairly quickly.
It is important to check Strontium levels through an ICP analysis and ensure its stability by dosing a Strontium supplement as needed.
Naturally, Strontium concentration ranges around 8-10 mg/l.
Strontium Zlement used in conjunction with a regular testing procedure, allows any reefer to make corrections to Strontium levels ensuring the levels in their tank water stay within the best range for their friends.
10 ml of Strontium Zlement increases the Strontium concentration of 100 litres by 1 mg/l.

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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.