{"product_id":"circular-aquarium-cave-two-entrance-tunnel","title":"Blubber Cove Circular Corner Aquarium Cave – Two-Entrance Tunnel Hide for Shy Fish","description":"\u003cp\u003eThe \u003cstrong\u003eBlubber Cove Circular Corner Aquarium Cave\u003c\/strong\u003e is a rounded, two-entrance corner hide built around a flow-through tunnel design. Unlike single-entrance caves where shy fish can be cornered by tankmates, this cave lets fish enter one side and exit the other — calmer behaviour, less stress, and a much higher chance your skittish species will actually use it. The circular silhouette also blends naturally into planted and hardscape aquascapes. UK 3D-printed in aquarium-safe PETG.\u003c\/p\u003e\n\n\u003ch2\u003eWhy two entrances matter\u003c\/h2\u003e\n\u003cp\u003eSingle-entrance caves are great for territorial cave-spawners — but for community fish, they're a trap. Corydoras, kuhli loaches, shy tetras and nervous shrimp avoid caves they can't escape through quickly. This is why fish-keepers often see their cave-decor go unused. Two entrances solve the problem: fish enter knowing they can leave the other side, so they actually claim the space as a daytime retreat instead of avoiding it.\u003c\/p\u003e\n\n\u003ch2\u003eThe circular shape\u003c\/h2\u003e\n\u003cp\u003eThe rounded form does two things. Visually, it reads as a natural stone outcrop rather than a moulded ornament — it slots into planted, hardscape and Iwagumi aquascapes without breaking the aesthetic. Behaviourally, the curved interior means fish never hit a flat wall, which matters for nervous species that startle and dart. Substrate can be layered on top to disguise it further.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eTwo entrances — flow-through design, fish never get cornered\u003c\/li\u003e\n  \u003cli\u003eCircular silhouette — natural stone-look aesthetic\u003c\/li\u003e\n  \u003cli\u003eCorner-fit shape — sits flush against the 90° back corner\u003c\/li\u003e\n  \u003cli\u003eSubstrate-friendly top — can be partially or fully buried\u003c\/li\u003e\n  \u003cli\u003eSmooth rounded interior — safe for delicate fins and shrimp moults\u003c\/li\u003e\n  \u003cli\u003e3D-printed in Northumberland, UK from aquarium-safe PETG\u003c\/li\u003e\n  \u003cli\u003eIdeal for shy nano fish and community setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aquarium-safe PETG plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 135 × 135 × 60 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEntrances:\u003c\/strong\u003e Two — flow-through tunnel design\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlacement:\u003c\/strong\u003e 90-degree back corner of tank\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColours:\u003c\/strong\u003e Black, White, Marble Effect, Moss Green, Sand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in:\u003c\/strong\u003e Northumberland, United Kingdom\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Blubber Cove\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal for these species\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCorydoras (panda, pygmaeus, bronze, sterbai) — shoaling species that need group cover\u003c\/li\u003e\n  \u003cli\u003eKuhli loaches and weather loaches — wriggle-through cave behaviour\u003c\/li\u003e\n  \u003cli\u003eNeocaridina and Caridina shrimp — colony grazing\u003c\/li\u003e\n  \u003cli\u003eShy nano fish — chili rasbora, ember tetra, celestial pearl danio\u003c\/li\u003e\n  \u003cli\u003eBristlenose plecos and small catfish\u003c\/li\u003e\n  \u003cli\u003eOtocinclus and hillstream loach\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAquascape placement\u003c\/h2\u003e\n\u003cp\u003eDesigned for the back-corner 90° of rectangular tanks 30 litres and up. Pair with low-light plants like java fern, anubias or moss to soften the silhouette. The circular form works particularly well in Iwagumi and Dutch-style aquascapes where stone arrangements dominate.\u003c\/p\u003e\n\n\u003ch2\u003eAlso suitable for reptile setups\u003c\/h2\u003e\n\u003cp\u003eWhile designed for aquariums, the same flow-through circular shape works as a vivarium hide for crested geckos, leopard geckos and small reptiles or amphibians. Bury under coco fibre or reptile substrate for an underground burrow look. PETG is non-toxic in humid and dry environments.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eHow is this different from your other corner caves?\u003c\/h3\u003e\n\u003cp\u003eTwo entrances. Our other corner caves (Tall Mangrove, Wide Corner, Underground, Arch) all have one main opening. This one is a flow-through tunnel — fish enter one side, exit the other. That makes it the right pick for shy or shoaling species that won't use single-entrance caves.\u003c\/p\u003e\n\n\u003ch3\u003eWill my corydoras actually use it?\u003c\/h3\u003e\n\u003cp\u003eYes — corydoras are one of the species this design was specifically chosen for. The flow-through tunnel matches their natural behaviour of swimming through under-rock spaces. Most owners report corys claiming the cave within 24-48 hours.\u003c\/p\u003e\n\n\u003ch3\u003eIs it safe for shrimp?\u003c\/h3\u003e\n\u003cp\u003eYes. PETG is shrimp-safe (no copper, no leaching) and the smooth interior won't catch moults. The two openings give shrimp safe escape routes from larger tankmates.\u003c\/p\u003e\n\n\u003ch3\u003eCan I bury it under substrate?\u003c\/h3\u003e\n\u003cp\u003eYes — the flat-ish top allows substrate to sit on top, hiding the structure further. Keep both entrances clear of substrate so fish can flow through.\u003c\/p\u003e\n\n\u003ch3\u003eWill it work in a community tank?\u003c\/h3\u003e\n\u003cp\u003eYes — this is one of the best community-tank cave designs because no fish gets trapped. Aggressive tankmates can't corner peaceful species inside.\u003c\/p\u003e\n\n\u003ch3\u003eIs it suitable for reptiles?\u003c\/h3\u003e\n\u003cp\u003eYes, as a secondary use. Crested geckos, leopard geckos and small snakes use it as a humid burrow when buried under reptile substrate. The two entrances are a behavioural plus for reptiles too.\u003c\/p\u003e\n\n\u003ch2\u003eWhy buy from Blubber Cove\u003c\/h2\u003e\n\u003cp\u003eOriginal aquascaper-designed pieces, 3D-printed to order in our Northumberland workshop in aquarium-safe PETG. No painted resin, no imports, no surprises. Free UK delivery over £30.\u003c\/p\u003e","brand":"Blubber Cove","offers":[{"title":"Black","offer_id":49761841447176,"sku":"","price":24.15,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":49761841479944,"sku":"","price":24.15,"currency_code":"GBP","in_stock":true},{"title":"Marble Effect","offer_id":49761841512712,"sku":"","price":24.15,"currency_code":"GBP","in_stock":true},{"title":"Moss Green","offer_id":49761841545480,"sku":"","price":24.15,"currency_code":"GBP","in_stock":true},{"title":"Sand","offer_id":49761841578248,"sku":"","price":24.15,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0880\/7114\/3688\/files\/large-aquarium-or-reptile-tank-underground-corner-tunnel-150821.jpg?v=1771496692","url":"https:\/\/www.getwarsplay.com\/products\/circular-aquarium-cave-two-entrance-tunnel","provider":"WarSplay","version":"1.0","type":"link"}