Question 1

Does River Sand Fine need to be washed before use?

Accepted Answer

Yes — river sand must be washed thoroughly before adding to an aquarium. Even commercially sold aquarium sand contains fine dust particles from processing and transportation that will cause severe, persistent cloudiness in the aquarium if not removed. The correct washing process: place the sand in a bucket, fill with water, agitate vigorously, drain the cloudy water without losing sand, and repeat 5–8 times until the drain water runs clear. Some initial mild cloudiness in the aquarium after setting up is normal and clears within 24–48 hours once filtration is running. Skipping or shortening the washing process is the single most common cause of persistent white cloudiness in new aquariums.

Question 2

How much river sand do I need for my aquarium?

Accepted Answer

The standard recommendation for most aquariums is a substrate depth of 3–4cm. As a practical guide: for a 60L standard aquarium with a 60×30cm footprint at 3cm depth, you need approximately 3–3.5kg of sand. For a smaller 30L nano tank at 3cm depth, approximately 1.5–2kg. Order slightly more than your calculation suggests — matching an existing sand layer with a later top-up from a different batch may show minor colour variation. The 2kg pack suits most small to medium setups; the 5kg pack is appropriate for standard 60–90L aquariums at full 3–4cm depth.

Question 3

Is River Sand Fine safe for Corydoras?

Accepted Answer

Yes — fine river sand is the ideal substrate for Corydoras catfish and is specifically recommended over gravel for this species. Corydoras forage through substrate by sifting mouthfuls of sand through their gill rakers, searching for food particles. Coarse gravel interrupts this natural behaviour and, over time, damages the sensitive barbels (whiskers) around the Corydoras mouth, making them prone to bacterial infection. Fine river sand allows full, natural sifting behaviour without any abrasion. If you keep Corydoras, fine sand is not optional — it is the substrate that protects their health and enables their natural behaviour.

Question 4

Will River Sand Fine affect my aquarium pH or water hardness?

Accepted Answer

Natural river sand has a neutral effect on water chemistry — it does not significantly raise or lower pH or water hardness in a typical freshwater aquarium. This makes it suitable for a wide range of fish including soft-water species like Tetras, Discus and Apistogramma that require neutral to acidic water, as well as hard-water fish. Note: if you intend to keep very soft-water fish at pH below 6.5, test your specific sand batch before committing to a large setup, as trace mineral content can vary between sources. For typical community aquariums, river sand is pH-neutral.

Question 5

Can I use River Sand Fine for a planted aquarium?

Accepted Answer

Yes — fine river sand works for planted aquariums, though it provides no nutrients on its own. For a planted tank with fine sand: use a nutrient-rich substrate (aquasoil or laterite) as a bottom layer, then cap with 2–3cm of river sand for aesthetics and bottom-dweller compatibility. Root tabs pushed into the sand beneath plants supplement nutrients directly at the root zone. For low-tech planted tanks with slow-growing plants, plain river sand works without a nutrient layer, provided root tabs or liquid fertilisers are used regularly. Fine sand is particularly good for foreground carpeting plants as roots spread easily through it.

Question 6

How does surface shipping affect delivery for River Sand Fine?

Accepted Answer

River Sand Fine is shipped surface (ground transport) due to the weight of sand, which makes air freight impractical for this product. Surface shipping typically takes 3–7 business days longer than standard parcel delivery depending on your location relative to our dispatch point. Delivery time estimates provided at checkout account for surface shipping. The product packaging is designed for the weight involved — sand is sealed in reinforced packaging to prevent bag failure during transit. If your order contains lighter items alongside sand, the non-sand items may be dispatched separately by standard courier at no additional cost.

Question 7

Can Loaches and burrowing fish use River Sand Fine?

Accepted Answer

Yes — fine river sand is the ideal substrate for burrowing and sand-sifting fish including Kuhli Loach, Yoyo Loach (Botia almorhae), Pakistani Loach (Botia rostrata), all Botia species and Geophagus and Satanoperca eartheater cichlids. These fish either burrow into the substrate for rest and security (loaches) or actively sift mouthfuls of sand to find food (eartheaters). A substrate depth of at least 4–5cm is recommended for species that burrow, so they can fully submerge. Coarse gravel prevents natural burrowing behaviour and can injure the undersides of these fish — fine sand is the correct substrate choice for any species with natural sand-interaction behaviour.

Question 8

Does River Sand Fine compact over time?

Accepted Answer

Fine sand can compact over time with the weight of water above it, potentially creating anaerobic (oxygen-free) zones in the deeper layers where hydrogen sulphide gas can accumulate. In aquariums with active sand-sifting fish (Corydoras, Loaches, Geophagus), this is naturally prevented as the fish constantly turn the upper substrate layer. For aquariums without sand-sifting fish, gently stirring the top 1–2cm of sand monthly with a thin stick or plant-planting tool prevents compaction and eliminates any gas pockets before they build up. Avoid disturbing the lower substrate layers — the aim is light monthly maintenance of the top layer only.

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