Substrates & AquascapingUltum Nature Systems
Dragon Wood is a rugged, ancient-looking aquarium driftwood named for its resemblance to Dragon Stone; it trades smooth lines for a chaotic, honeycomb-like structure packed with natural craters, deep crevices, and miniature tunnels. Use it for high-impact forest layouts or weathered riverbanks; the tunnels provide hiding spots for shy species like plecos and shrimp, and the wood naturally lowers water pH and hardness. Available as single, 3-pack, and 5-pack in sizes XS through XL.
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The Dragon Wood Showpiece (DW03) is a one-of-a-kind WYSIWYG (What You See Is What You Get) premium aquarium driftwood showpiece, hand-selected for its unique shape and photographed so the exact piece shown is the one you receive. Dragon Wood stands out for its dark brown tones and rugged texture with deep, natural crevices, offering a dramatic old-growth aesthetic reminiscent of decaying timber along forest riverbeds. Great surface for anchoring aquatic mosses, Anubias, or Ferns; perfect for woodland-themed hardscapes in aquariums, terrariums, paludariums, or reptile enclosures. Approximately 35 x 13 x 7 inches.
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Substrates & AquascapingUltum Nature Systems
The Driftwood Stump (Extra Extra Small) is a Malaysian driftwood stump for nano-tanks and detailed foreground scaping; its dense, blocky silhouette mimics the base of an ancient submerged tree, offering stability and a thick organic feel without much vertical space. The compact stump shape is an ideal hardscape anchor with a heavy, low-profile look; the rugged, dark surface is premium substrate for attaching Moss, Anubias Nana Petite, or Bucephalandra, creating a lush green island, and a dense surface for beneficial bacteria and biofilm. Dimensions 2 to 5 inches. 1, 3, and 5 packs.
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Substrates & AquascapingUltum Nature Systems
The Driftwood Stump (Extra Small) is a Malaysian driftwood stump for nano-tanks and detailed foreground scaping; its dense, blocky silhouette mimics the base of an ancient submerged tree, offering stability and a thick organic feel without much vertical space. The compact stump shape is an ideal hardscape anchor with a heavy, low-profile look; the rugged, dark surface is premium substrate for attaching Moss, Anubias Nana Petite, or Bucephalandra, creating a lush green island, and a dense surface for beneficial bacteria and biofilm. Dimensions 3 to 6 inches. 1, 3, and 5 packs.
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Substrates & AquascapingUltum Nature Systems
Driftwood Tree Branches are twisted, weathered wood clusters for building an underwater forest or full-on canopy scene in an aquascape; wrap the tips in moss or tiny epiphytes to create miniature aquatic trees, adding depth, scale, and a tiny forest vibe. The clusters are perfect scaffolding for Christmas, Java, or Flame moss, and the dense network of tiny branches provides a jungle gym for shrimp, fry, and small nano-fish. Sizes Small 4-6 inches, Medium 7-12 inches, and Large 12-18 inches.
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Elephant Skin Stone features a unique leathery, wrinkly gray surface from years of weathering and water erosion; a good pick for adding contrast and subtle texture to an aquascape without extremely sharp edges, making it safe for fragile critters such as long-finned fish. Some pieces feature natural dimples and craters for shrimp to explore or for anchoring small plants; also suitable for terrariums and paludariums. Natural product that may slightly alter water parameters. Pieces range 8-18 inches. 5LB through 30LB packs.
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UNS Controsoil extra-fine black aquarium soil made from natural soil and volcanic ash for planted tanks. Provides balanced nutrients with low ammonia release and buffers pH to around 6.8; no rinsing required.
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Substrates & AquascapingUltum Nature Systems
Ultum Nature Systems Controsoil is a natural soil and volcanic ash substrate from Japan designed for planted aquariums, providing balanced nutrients with low ammonia release and no rinsing required. It buffers water to a slightly acidic pH around 6.8 with lower hardness; the extra fine granules suit nano tanks and small-rooted plants.
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Substrates & AquascapingUltum Nature Systems
Extreme Holey Rock takes the naturally porous look of Holey Rock to the next level with an especially high number of holes and cavities throughout each piece; the heavily pitted surface creates a bold, rugged appearance for intricate rock formations and dramatic visual texture. Openings create natural-looking gaps, crevices, and sheltered areas. Natural limestone that may increase aquarium pH and water hardness; each piece varies in size, shape, color, and hole pattern. 10LB pack.
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Substrates & AquascapingUltum Nature Systems
Ultum Nature Systems Controsoil, a fine black volcanic ash-based substrate (3mm granules) for freshwater planted aquariums. It provides plant nutrients, buffers pH and KH to slightly acidic levels, and requires no rinsing.
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UNS Controsoil fine brown aquarium soil made from natural soil and volcanic ash for planted tanks. Provides balanced nutrients with low ammonia release and buffers pH to around 6.8; no rinsing required.
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Substrates & AquascapingUltum Nature Systems
Fire Stone is a natural volcanic rock with a highly porous texture, an ideal base for attaching aquatic mosses or epiphytic plants like Anubias and Bucephalandra; deep reddish-brown when dry, it darkens when wet to a glowing, rich hue reminiscent of hot embers. Its rugged form breaks down easily for intricate hardscape layouts or as a sturdy base layer under aquarium driftwood; also suitable for terrariums and paludariums. Natural product that may slightly alter water parameters. Pieces average 3-10 inches. 10- and 18-pound packs.
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Forest Driftwood is a natural aquarium driftwood with a flat, stackable profile ideal for building architectural layers, dramatic cliffs, and stable retaining walls in complex, multi-tiered aquascapes; earthy, textured slabs in warm beiges and deep browns give a raw, organic riverbank feel. The craggy surface offers ideal grip for wedging epiphytes like Anubias and Bucephalandra; nooks and crannies create a realistic overgrown look. Sizes from Extra Small (4-8 in) to 2XL (23-29 in); 1, 3, and 5 packs. Releases tannins that tint water tea-colored, subsiding over time.
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Gobi Desert Stone is a natural stone with a light greyish-cream hue and a smooth texture with patterns resembling delicate folds or ancient sediment layers; excellent for canyon-style aquascaping layouts, while its light palette makes the colors of aquarium plants and freshwater fish or shrimp truly pop. Also suitable for terrariums and paludariums for a clean, windswept hardscape look. Natural product that may slightly alter water parameters (increase general hardness and pH). 5, 10, 20, and 30LB packs.
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Grey River Slate Stone is a versatile, elegant aquascaping choice with a cool grey color and occasional brown and white speckling; semi-smooth finish and relatively flat profile give great stacking potential for river or lake-inspired layouts, or as a subtle accent in larger tanks. May also be used as a spawning medium for species like cichlids; suitable for terrariums and paludariums as a clean, natural stone foundation. Natural product that may slightly alter water parameters. 5, 10, 20, and 30LB packs.
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Hakkai Accent Stones are smaller pieces of the iconic Hakkai Stone, known for its dark bluish-green hue and smooth, river-worn edges; unique, irregular holes from centuries of natural erosion give it a weathered character and the nickname Bug-Eaten Rock. Ideal for fine-tuning a professional Iwagumi or crafting an authentic river-bed aquascaping layout; also suitable for terrariums and paludariums. Inert stone that will not alter water parameters. Pieces range 2-5 inches; approximately 5 lbs per bag.
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Hakkai Stone (also known as Pahai Stone) is a premium natural rock prized for its dark bluish-green color and smooth, river-worn texture; irregular holes and craters from centuries of natural erosion give it a weathered character and the nickname Bug-Eaten Rock. Its dark coloration provides striking contrast against vibrant green plants, making it perfect for Iwagumi layouts or authentic riverbed-style hardscapes; also suitable for terrariums and paludariums for a mature, aged look. Inert stone that will not alter water parameters. 10, 20, and 30LB packs.
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Holey Rock is a naturally porous limestone known for its unique holes, cavities, and textured surface; light, neutral color creates clean contrast with green aquarium plants, dark substrates, and other aquascaping materials. Use it to create natural-looking rock formations, add height and depth to an aquascape, or build detailed hardscape layouts with plenty of texture. Limestone-based rock that may naturally increase water hardness and pH. Each piece is naturally unique. 10LB pack.
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Substrates & AquascapingUltum Nature Systems
Icelandic Lava Stone is a premium volcanic rock offering more detail, density, and character than standard black lava. This natural rock features a deep, dark brown hue when submerged and a highly porous surface, perfect for dramatic mountainous aquascapes. Its porous nature provides ideal surface for attaching mosses or housing beneficial nitrifying bacteria. Inert and will not alter water parameters. Available in 4LB, 7LB, 13LB, and 21LB packs.
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Jade Rhino Stone is a unique aquascaping stone with a rugged, heavily textured surface and natural green-gray coloration. Its irregular shapes, ridges, and weathered appearance make it an excellent choice for realistic rock formations, focal points, and detailed hardscape in freshwater aquariums.
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Jade Stone is a highly decorative natural stone that offers a truly special aesthetic for aquascapers seeking a bold, one-of-a-kind look. This unique hardscape features a breathtaking color palette ranging from deep turquoise and vibrant emerald green to striking light orange-red speckling and mineral streaks of dark and light gray. Its vibrant coloration sets it apart from more traditional neutral stones, making it the perfect pick for those who want a layout material rarely seen in standard planted aquariums. Also suitable for non-aquarium use and works beautifully as a luxury accent in terrariums, paludariums, or similar enclosures. Available in 10, 20, and 30 pound packs.
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Joro Stone is a natural aquarium rock with deep purple-red tones and elegant grey and cream streaks that darken and intensify when wet, creating a bold focal point in underwater landscapes. Also suited as a sophisticated accent in terrariums, paludariums, and bioactive planted enclosures; sold in 10, 20, and 30 lb packs and should be rinsed before use.
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Jungle Vine Wood is a natural aquarium driftwood with long, slender, spiraling shapes that create flowing movement across aquascapes. Available in Small through Show Piece sizes (11 to 47 inches), it should be rinsed and soaked or boiled before use to waterlog it and manage natural tannin release.
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Lagoon Stone is a unique natural rock that offers incredible character for high-impact aquascaping. Dark grey in color, this stone features a rugged surface texture very similar to Lava Rock, characterized by numerous jagged edges, deep depressions, and a highly porous feel. These natural craters make Lagoon Stone the perfect choice for creating intricate cave-like structures and mountain-style hardscapes. Because of its rough, abrasive edges, it is not recommended for fragile-finned fish such as Bettas or animals with sensitive skin. Also suitable for terrariums, paludariums, or similar bioactive enclosures. Sold in 5LB, 10LB, and 20LB options.
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Log Wood is the backbone of any aquascape aiming for a wild, natural riverbed rather than a manicured display. With its long, straight profile and realistic bark texture, this natural aquarium driftwood mimics ancient fallen timber and sunken forest floors. The natural, rough surface provides the perfect base for aquatic mosses and epiphytic plants, and its uniform shape is often used as a hidden scaffold to support heavy stones or create a terraced substrate effect. Available in Small and Medium sizes as 3, 5, or 10 packs.
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Madra Wood is a rugged, sculptural aquarium driftwood with intricate knots, deep whorls, and weathered texture, ideal as a centerpiece or accent in planted tanks. Its grooved surface is excellent for anchoring mosses, ferns, and Bucephalandra, and it pairs well with Seiryu or Dragon Stone; rinse and soak or boil before use to waterlog it and manage tannins.
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Manten Stone is a popular natural rock found in high-elevation Asian mountain ranges, where centuries of erosion and pressure have forged its iconic rugged edges, deep textures, and varied colors. Extremely sought after for its ability to recreate extreme realism, this natural stone is a favorite for Iwagumi layouts or creative mountainscapes. Its unique cracks and craggy surfaces provide an ideal surface for attaching mosses or using greening techniques to add maturity to the hardscape. Also suitable for terrariums, paludariums, or similar planted enclosures for an authentic, weathered look. Average size ranges from 2 to 10 inches. Sold in 10LB, 20LB, and 30LB options.
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Maple Leaf Stone is a striking natural rock featuring a warm reddish-brown color and a fascinating web-like honeycomb or leaf-vein patterning. It provides beautiful color contrast against vibrant green aquatic plants, perfect for dramatic canyon-style layouts or as a warm, textured hardscape centerpiece. Also suitable for terrariums, paludariums, or similar bioactive enclosures. Pieces range from 3-12 inches. Available in 10lb ($44.99) and 20lb ($74.99) packs.
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Marsh Stone is a natural rock comparable to Hakkai Stone with a lighter color palette of light grey and white tones. It features smoother, semi-rounded edges and a water-worn shape, perfect for authentic river-style aquascapes. Its grooves and crevices are ideal for attaching aquarium mosses or epiphytic plants. Suitable for Iwagumi layouts or mixed hardscapes, and works beautifully in terrariums and paludariums. Available in 5, 10, 15, 20, and 30 pound options.
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Mopani Wood is an African hardwood famous for its extreme density and striking two-toned contrast of sandy tan and deep chocolate brown. Because it is so dense, it typically sinks immediately, and its exceptional hardness means it breaks down much more slowly than other driftwoods for a long-lasting hardscape foundation.
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