Complete and ready to use Caribsea A.R.M reactor media is prepared for action.

Containing calcium, carbonate and a variety of other beneficial elements, the media does not require pre-rinsing and has a huge surface area - almost double the size of similar products. It has almost 50 times more strontium than other brands too, making it the ideal product for both performance and quality.

A.R.M is low in phosphates and silica thanks to the exclusion of gastropod shells, so it won't add any unwanted elements. The product is 10-15mm in size which allows for the best carbon dioxide penetration, and the best results.

The media contains a high amount of Halimeda Incrassata, a pure aragonite that is used in laboratories.

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.