Roman Gravel aquarium gravel
Roman gravel is a smooth, rounded aquarium gravel sold in a range of single and mixed colourways, used as a decorative substrate in freshwater tanks. We stock it in several finishes, from natural stone tones to bright mixed blends, so you can match it to the look of the tank rather than being stuck with one option.
What it is and the range we stock
Roman gravel is rounded rather than sharp-edged, which is the main reason it is popular as an aquarium substrate — smooth stones are gentler on fish that root around the bottom of the tank and on bottom-dwelling species in particular. Our range includes natural tones such as Natural Lakeland and Natural Alpine, bolder single colours like Jet Black, Lemon Zest and Sonic Blue, and mixed blends including Tri Colour Mix and Spectrum Mix for a more varied look.
Because it comes in genuinely different colourways rather than one shade with different names, it is worth deciding on the look of the tank first — a natural, planted-style setup usually suits the muted tones, while a brighter mixed blend works well in a simpler, more colourful display tank.
Using it in a tank
Rinse gravel thoroughly before adding it to the tank, even where the packaging says it is pre-washed — dust and fine particles left in the bag will cloud the water on first fill if it is added straight in. A gentle rinse under running water until it runs clear is normally enough.
Depth matters more than colour if you are planning to keep live plants or bottom-dwelling fish: a shallow layer suits a simply decorated tank, while a deeper bed gives plant roots somewhere to establish and gives burrowing species room to behave naturally.
The range
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Tetra Goldfish Flakes
Complete goldfish flakes in several pack sizes, with a shared formula across the family
From£3.02
Tetra Goldfish Granules
Complete granules for goldfish, with a shared formula across both pack options
From£3.98
Tetra Prima Mini Granules
Slow-sinking granules for mid-water and bottom-feeding fish, blending herbivore and omnivore diets
£6.10
Tetra Aquasafe
A water conditioner that neutralises chlorine and heavy metals, with an added vitamin B mix
From£6.41
Tetra Pond Fish Food Variety Sticks
Complete Tetra Pond Variety Sticks in three colours, across four pack sizes
From£6.41
Tetra Koi Pond Fish Food Sticks
Complete fast-soaking Tetra Pond Koi Sticks, available in four pack sizes
From£6.41
Tetramin
Complete TetraMin flake food for ornamental fish, offered across several pack sizes
From£2.39
Tetra Temperate Flakes
Complete flakes for subtropical fish kept at 18–23°C, with vegetable ingredients
£6.99
Tetra Pond Fish Food Sticks
Complete fast-soaking Tetra Pond Sticks for pond fish, in seven pack sizes
From£4.77
Tetra Japan
Sinking dry pellets for fancy goldfish, with pack-specific label information shown clearly
From£4.56
Common questions
- Does aquarium gravel need washing before use?
- Yes, always rinse it first even if the bag says pre-washed. Fine dust settles during transport and packing, and adding gravel straight from the bag will cloud the water until it settles or is filtered out, which takes far longer than a quick rinse beforehand.
- Is Roman gravel safe for all fish?
- The rounded shape is gentler than sharp-edged gravel, which makes it a reasonable general-purpose choice, but always check what substrate suits your specific fish — some bottom-dwelling species have particular preferences for depth or grain size that are worth researching before you buy.
- How much gravel do I need for my tank?
- A rough guide is around 1-1.5kg of gravel per litre of tank volume for a standard shallow layer, more if you want a deeper bed for plants or burrowing fish. Check the coverage guidance on the specific pack you buy, since bag sizes and densities vary.
- Can I mix different Roman gravel colours in one tank?
- Yes, plenty of people do — mixing a natural tone with a smaller amount of a brighter colour is a common way to add interest without overwhelming the tank. There is no functional reason not to combine colourways, it is entirely down to the look you want.
Related
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.