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Marina
✓Price
$17.68
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BESPORTBLE Natural Crushed Coral Stones for Aquarium Filter Media, 3-10cm Large Porous Rocks for Fish Tank Water pH Buffer and Decoration, 500g Sea Gravel Substrate for Pond
★★★★★
$17.68
Quantity
1
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About this item
- Effective Biological Water Balancing: These genuine coral stones act as a natural mineral buffer to maintain stable pH levels. Specifically suitable for African Cichlids and marine environments, the porous surface helps stabilize alkalinity, protecting your aquatic pets from sudden acidity drops without chemical additives
- Porous Bio-Filtration Structure: Each sea rock features a honeycomb-like structure that provides an immense surface area for mechanical and biological filtration. This design promotes the removal of impurities and debris, helping to foster a clear, balanced ecosystem within your external or internal filter chambers
- Versatile Aquascaping Substrate: Ranging from 3-10cm, these textured stones offer a rugged, organic look for bottom landscaping. They solve the problem of artificial-looking decor, allowing you to create a professional reef or riverbed aesthetic that blends seamlessly into any tropical fish tank or garden pond
- Reliable Marine Mineral Source: Rich in natural calcium and carbonate, this substrate slowly releases essential minerals into the water. This organic replenishment supports the growth of healthy scales and skeletal structures in your fish, ensuring an enduringly vibrant habitat while maintaining clarity in your aquatic display
- Easy Setup and Multi-use Utility: Supplied in a convenient 500g pack, these decorative rocks are ready for use after a quick rinse. Whether used as a bottom sand replacement or tucked into filter mesh bags, they provide an organized approach to maintaining water quality for both freshwater and saltwater setups
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Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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