Substrates & AquascapingUltum Nature Systems
Mountain Stone is a relatively new addition to the world of aquarium hardscaping, offering a unique blend of characteristics from some of the most popular stones in the hobby. Light in coloration, this natural stone is comparable to Dragon Stone in its warm, earthy tones, yet it is exceptionally lightweight, similar to Lava Rock. Its craggy shapes and almost sand-like textures are a perfect pick for creating dramatic cliffs and high-altitude mountainous scenes. Pairs well with deep green mosses and vibrant red aquatic plants for high contrast. Also suitable for terrariums, paludariums, or similar bioactive enclosures. Sold in 10LB and 20LB packs.
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Substrates & AquascapingUltum Nature Systems
Nano-sized Horn Wood, a dense, high-character natural driftwood with warm tones and bold, antler-like protrusions, averaging 4-10 inches. The sharp, clean lines provide contrast and drama for focal points, while the rough, aged texture is tailor-made for attaching aquatic mosses, ferns, or Bucephalandra. Many pieces feature flat bases or sturdy trunks for easy stacking. Available in 5-pack and 10-pack; expect natural variations in shape, weight, and character.
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Substrates & AquascapingUltum Nature Systems
Spiderwood is known for its wild, multi-branching shape that instantly adds depth and personality to any aquascape. This Nano version is specifically selected for those twisting tangles and sculptural turns that fit perfectly into smaller tanks. Whether you stand it upright, lay it on its side, or angle it, each orientation creates a fresh visual story. The complex network of branches adds immediate depth and energy without overwhelming the tank, and the spindly limbs are ideal for anchoring mosses, Bucephalandra, or Anubias Nana Petite. Available as single, 5-pack, or 10-pack; pieces range from 3 to 8 inches.
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Substrates & AquascapingUltum Nature Systems
Natural Reef Rock Coralline features naturally irregular formations with a coralline-covered surface that gives each piece an authentic reef-rock appearance. The varied shapes and textures make it a versatile foundation for natural-looking saltwater and reef hardscapes; individual pieces can be combined into larger formations with caves, crevices, and varying elevations.
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Substrates & AquascapingUltum Nature Systems
Natural Reef Rock Premium is a bright white, highly porous rock designed for marine and reef aquariums. Its intricate open structure provides plenty of surface area for beneficial bacteria and coral attachment, and the naturally irregular lightweight pieces are ideal for building a natural reef hardscape with depth, texture, and open spaces; sold in a 30LB pack.
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Substrates & AquascapingUltum Nature Systems
Natural Reef Shelf Rock Coralline features naturally formed shelf-like pieces with a coralline surface and a layered structure that mimics established reef rock. The broad, overhanging surfaces are ideal for creating ledges, shaded areas, and changes in elevation; pieces can be arranged into larger reef structures or mixed with other reef rock for a varied, natural layout.
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Substrates & AquascapingUltum Nature Systems
Ultum Nature Systems Controsoil Black (Normal, ~5mm granules) is a Japanese aqua soil made of natural soil and volcanic ash that buffers water to a slightly acidic pH around 6.8, releases low ammonia for safer new-tank cycling, and provides nutrient-rich, no-rinse granules ideal for planted freshwater aquariums, fish, and shrimp.
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Substrates & AquascapingUltum Nature Systems
Normal Controsoil Brown is a natural aquarium soil substrate from Ultum Nature Systems in a brown tone for planted tanks. The nutrient-rich granules support plant root growth, and the normal grain size suits aquascaping layouts.
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Substrates & AquascapingUltum Nature Systems
Natural driftwood from Ultum Nature Systems for freshwater aquascaping, similar to Malaysian driftwood but with lighter coloration and less uniform, varied shapes and textures. Each unique piece provides hiding spots that reduce fish stress, and the wood releases tannins that help soften water like tropical fish habitats; soaking before placement minimizes initial tannin release and helps it sink.
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Substrates & AquascapingUltum Nature Systems
A rugged, chunky natural aquarium driftwood stump with a weathered, river-washed surface full of gnarly knots and deep textures. Acts as a heavy anchor to ground substrate slopes and lock down supporting stones, while its craggy exterior gives epiphytes like Anubias and Bucephalandra grip and provides surface area for beneficial bacteria and biofilm for shrimp and bottom-dwellers. Available in Small (8-12 in), Medium (12-16 in), Large (16-20 in), and XL (20-24 in); may float initially and release tannins, so soak or boil before use.
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Substrates & AquascapingUltum Nature Systems
Pacific Driftwood brings a mature, untamed character to the planted tank with deep knots, weathered tangles, and an aged river-worn look. Each piece is a unique puzzle of textured paths and hollowed grooves ideal for dramatic river roots or wild jungle layouts. The knots and tangles provide hiding spots for fry and shrimp plus surface area for beneficial bacteria. Available from XS to XL in single, 3-pack, 5-pack, and 10-pack options.
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Substrates & AquascapingUltum Nature Systems
Patagonia Stone is a porous, roughly textured natural rock with a rugged lava-stone-like aesthetic in earthy rust and brown hues, creating warm contrast against green plants. Its creviced texture is ideal for mountain hardscape layouts and for attaching mosses and epiphytic plants; sold in 10 and 20 lb packs and should be rinsed before use.
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Substrates & AquascapingUltum Nature Systems
Petrified Wood is a remarkable natural stone formed from the fossilized remains of ancient trees, where organic materials have been replaced by minerals over millions of years. This results in a dense rock retaining the intricate grain patterns and textures of the original terrestrial vegetation. Its earthy tones and vertical wood-like structures make it a good pick for forest or sunken timber-inspired hardscape layouts. Also suitable for terrariums, paludariums, or similar planted enclosures for a prehistoric, woodland aesthetic. Available in 5LB ($23.99), 10LB ($44.99), 20LB ($74.99), and 30LB ($99.99) packages.
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Substrates & AquascapingUltum Nature Systems
Red Manten Stone is a popular aquascaping stone recognized for its rich red-brown color, rugged texture, and naturally layered appearance. Its warm, earthy tones add contrast and dimension to planted aquariums, and it pairs beautifully with green plants and mosses.
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Red Petrified Wood is a natural stone formed from the fossilized remains of ancient trees and terrestrial vegetation. Over millions of years, organic materials have been replaced by minerals to create a dense, beautiful stone that retains the intricate grain and character of its prehistoric origin. This variety features deep brick-reds and warm earthy tones, perfect for recreating a submerged redwood forest. Also suitable for terrariums, paludariums, or bioactive enclosures. Pieces range from 5-12 inches. Available in 10lb ($44.99), 20lb ($74.99), and 30lb ($99.99) packs.
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Substrates & AquascapingUltum Nature Systems
Red River Slate is a natural red rock with occasional brown and white streaks and a semi-smooth finish. The coloration becomes significantly bolder when wet, showcasing a vibrant red color that provides a visually striking contrast when used with lush green plants in an aquascape. This stone has great stacking potential due to its relatively flat shape, making it an excellent choice for creating river or lake-inspired layouts or a waterfall effect in paludariums and terrariums. Also suitable for any planted enclosures. Stones vary in shape, size, and density. Sold in 5LB, 10LB, 20LB, and 30LB options.
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Substrates & AquascapingUltum Nature Systems
Rhino Stone is a rugged, gray-colored rock blended with cream and brown hues. The neutral color palette of this stone complements flora of all colors well. Its versatile texture and organic shape make it an ideal pick for tanks for building dramatic rock formations to designing a balanced, natural-looking hardscape. Rhino Stone is also suitable for non-aquarium use and will work beautifully as an accent in terrariums, paludariums, or similar planted enclosures. Available in 5, 10, 20, and 30 pound packs.
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Sand Stone is an intricate natural stone characterized by its distinct layers and prominent striations, which are created by natural erosion from flowing water. The yellowish-cream coloration provides a warm, bright canvas that helps aquatic plants and livestock stand out in an aquascape. Because of its heavily layered texture, this natural rock is a perfect pick for creating mature, canyon-style aquascaping layouts with a highly geological feel. Also suitable for terrariums, paludariums, or similar planted enclosures. Stones vary in shape, size, and density. Sold in 5LB, 10LB, 20LB, and 30LB options.
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Substrates & AquascapingUltum Nature Systems
Ultum Nature Systems Spider Wood on Slate is natural spiderwood driftwood pre-attached to a slate base so it sinks immediately and stays positioned without pre-soaking or added weights. Its intricate branching adds complexity to freshwater aquascapes, gives fish hiding spots, and has minimal effect on pH without discoloring the water.
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Substrates & AquascapingUltum Nature Systems
Spiderwood is a beloved choice among aquascaping enthusiasts for its intricate, multi-branching shape and natural beauty. This piece comes pre-mounted to a flat slate base, so there is no need for balancing rocks or suction cups; bury the slate and the substrate locks it solid so your wood stays exactly where you want it. The integrated slate base acts as a built-in anchor for notoriously buoyant spiderwood, and the twisting limbs offer the perfect framework for attaching Moss, Anubias, or Bucephalandra. Available in Small, Medium, and Large sizes as singles or multi-packs.
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Substrates & AquascapingUltum Nature Systems
Star Wood brings a bold, architectural feel to your aquascape with its long, straight branches and naturally pointed tips. It has the smooth texture of Manzanita Wood but with sharper edges for a bolder, more directional look, perfect for structured layouts, dramatic slopes, or branching designs.
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Substrates & AquascapingUltum Nature Systems
UNS Bonsai 001 is a wave-shaped handcrafted aquarium bonsai driftwood tree, replicating a fallen tree or weathered rooted nature scene with its flowing silhouette. It pairs with aquatic mosses and epiphytic plants like Anubias and Bucephalandra for a lush windswept canopy, and its porous wood supports beneficial bacteria and biofilm grazing. Available in three sizes.
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Substrates & AquascapingUltum Nature Systems
UNS Bonsai 002 is a handcrafted aquarium bonsai tree modeled after a classic cedar tree, with a distinct coniferous shape tapering toward the top like a mountain evergreen. Its expansive wide base offers plenty of surface area for attaching aquatic mosses and epiphytic plants, and its porous wood supports beneficial bacteria and biofilm grazing. Available in three sizes.
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Substrates & AquascapingUltum Nature Systems
UNS Bonsai 003 is a large handcrafted double-trunked aquarium bonsai driftwood tree, a premier centerpiece choice for structural depth and balance in planted tanks. It pairs with aquatic mosses and epiphytic plants for a lush ancient twin-stemmed tree look, and its porous wood supports beneficial bacteria and biofilm grazing. Available in three sizes.
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Substrates & AquascapingUltum Nature Systems
UNS Bonsai 004 is styled after a large pine with a sweeping broad base, bringing scale and architectural height to planted aquariums. Its sturdy, balanced foundation keeps it stable during maintenance, and it pairs with aquatic mosses and epiphytic plants like Anubias and Bucephalandra to mimic an evergreen canopy. Its porous wood supports beneficial bacteria and biofilm grazing. Available in three sizes.
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UNS Bonsai 005 features a group of similar handcrafted driftwood trees creating a natural multi-trunk effect for a cohesive woodland scene without purchasing multiple trees. It pairs with aquatic mosses and epiphytic plants, and its porous wood supports beneficial bacteria and biofilm grazing. Available in four sizes.
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Substrates & AquascapingUltum Nature Systems
UNS Bonsai 006 is a versatile handcrafted aquarium bonsai tree featuring a curved main trunk and tufted branches, providing structural height and a sense of movement in planted aquariums. It pairs with aquatic mosses and epiphytic plants to create lush cloud-like tufts of greenery, and its porous wood supports beneficial bacteria and biofilm grazing. Available in four sizes.
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Substrates & AquascapingUltum Nature Systems
UNS Bonsai 007 is a handcrafted aquarium bonsai driftwood tree featuring a striking vertical trunk crowned with a distinct triangular canopy, evoking a majestic highland evergreen. It pairs with aquatic mosses and epiphytic plants like Anubias and Bucephalandra to mimic a lush leafy canopy, and its porous wood supports beneficial bacteria and biofilm grazing. Available in four sizes.
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Substrates & AquascapingUltum Nature Systems
UNS Bonsai 008 consists of multiple handcrafted driftwood trees clustered together to resemble a natural grove, making it easy to build a miniature forest scene. It pairs with aquatic mosses and epiphytic plants to create a lush interconnected canopy, and its porous wood supports beneficial bacteria and biofilm grazing. Available in five sizes.
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UNS Bonsai 009 is a handcrafted aquarium bonsai tree shaped to resemble a classic fir tree, evoking a timeless evergreen. It is perfect for rugged mountain forest aquascapes or holiday decoration, and pairs with aquatic mosses and epiphytic plants to mimic dense coniferous foliage. Its porous wood supports beneficial bacteria and biofilm grazing. Available in three sizes.
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