This natural decorative gravel is available in two size options—7–15mm Congo River Gravel and 15–30mm Polario Gravel XXL—making it suitable for a wide range of aquarium and garden setups. Both variations are supplied in large 20kg bags and feature smooth, rounded stones that are completely fish-safe and pH-neutral. Whether you're aquascaping a planted tank, setting up a terrarium, lining a pond edge, or creating clean borders in the garden, these gravels offer both function and aesthetic appeal.

Congo River Gravel (7–15mm) offers a finer grain, ideal for planted aquariums, terrariums, and smaller-scale landscaping. It provides excellent support for root growth while helping maintain good water circulation.

Polario Gravel XXL (15–30mm) features a bolder stone size better suited to larger tanks or outdoor use, where improved water flow and a dramatic natural finish are key.

Key Features:

Both options provide a clean, natural look that works equally well underwater or in dry decorative settings—offering reliable performance for aquarists, pond keepers, and gardeners alike.

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.