Substrates & AquascapingUltum Nature Systems
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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FilterUltum Nature Systems
Pack of three highly porous biological filter media blocks designed for UNS Dual All-In-One aquariums. Angular cutouts promote water flow; two blocks fit side by side in UNS Media Tower trays.
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FilterUltum Nature Systems
These replacement UNS Dual AIO 3D Honeycomb filter socks come in a 2-pack of 200-micron mesh socks that capture uneaten food, fish waste, and floating particles in UNS Dual AIO aquariums. They require the UNS Dual AIO Filter Sock Conversion Kit and make quick swaps easy for cleaner, clearer water.
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FilterUltum Nature Systems
Replacement 2-pack of 100-micron nylon mesh filter socks for the Ultum Nature Systems Dual AIO Filter Sock Conversion Kit. They capture uneaten food, fish waste and floating particles to support cleaner, clearer water, and can be cleaned and reused.
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FilterUltum Nature Systems
The Ultum Nature Systems Dual AIO Filter Sock Conversion Kit adds fine mechanical filtration to the rear chamber of any UNS Dual All-In-One aquarium. The included acrylic conversion plate and 200-micron 3D Honeycomb mesh filter sock capture floating debris and uneaten food before they break down, improving water clarity.
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OtherUltum Nature Systems
The UNS Dual AIO Intake Guard is a slot-reducing barrier designed for all sizes of Ultum Nature Systems Dual AIO aquariums, keeping small fish, shrimp, and other livestock out of the rear filtration chambers while maintaining water flow and surface skimming.
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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Tank & FurnitureUltum Nature Systems
The Ultum Nature Systems Foresta Paludarium 35E is a hybrid paludarium with built-in filtration, a cascading waterfall, and an atomizer misting system that supports both aquatic and terrestrial plants. The glass enclosure includes a submersible pump, Foresta Mat plant wall, and Foresta Line; plants, hardscape, and substrate are sold separately.
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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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Substrates & AquascapingUltum Nature Systems
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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