{"product_id":"nano-shrimp-tunnel-compact-buried-cave","title":"Blubber Cove Nano Shrimp Tunnel – Compact Buried Cave for Nano Tanks","description":"\u003cp\u003eThe \u003cstrong\u003eBlubber Cove Nano Shrimp Tunnel\u003c\/strong\u003e is a compact slim-profile buried tunnel sized specifically for nano aquariums. At 133mm long and just 40mm tall, it fits in tanks where larger caves dominate the space — 10L Fluval Spec, 20L cubes, shrimp bowls and small breeder tanks. Buries fully under shallow substrate against the back or side glass, giving your shrimp colony a hidden territory without sacrificing the limited tank real estate nano scapes are built around. UK 3D-printed in aquarium-safe PETG.\u003c\/p\u003e\n\n\u003ch2\u003eWhy nano tanks need a different cave\u003c\/h2\u003e\n\u003cp\u003eNano aquariums (anything under 30 litres) have a problem with most aquarium decor — it's all designed for medium tanks. A standard 200mm+ cave eats half the substrate in a 20L nano, leaving no space for plants, scape, or swimming room. Shrimp keepers and nano hobbyists end up either skipping caves entirely or making expensive mistakes ordering oversized decor. This tunnel solves that. Sized for the realities of nano keeping, priced at the entry point — get shelter into your nano tank without compromising the scape.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eCompact 133mm length — fits nano tanks from 10 litres up\u003c\/li\u003e\n  \u003cli\u003eSlim 40mm profile — buries fully in shallow nano substrate\u003c\/li\u003e\n  \u003cli\u003eAgainst-glass design — runs along the back or side wall, out of the visible scape\u003c\/li\u003e\n  \u003cli\u003eEntry-level price — the affordable way to add proper shelter to a nano tank\u003c\/li\u003e\n  \u003cli\u003eSmooth interior — safe for delicate shrimp moults and fry\u003c\/li\u003e\n  \u003cli\u003e3D-printed in Northumberland, UK from aquarium-safe PETG\u003c\/li\u003e\n  \u003cli\u003eIdeal for shrimp colonies, betta nano tanks, and breeding grow-out 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\u003eStandard size:\u003c\/strong\u003e 133 × 42 × 40 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge size:\u003c\/strong\u003e 168 × 52 × 48 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlacement:\u003c\/strong\u003e Against back or side glass, buried under substrate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTank size:\u003c\/strong\u003e Standard suits 10-30 litres · Large suits 30-50 litres\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSubstrate depth needed:\u003c\/strong\u003e 4-5cm minimum to fully bury\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColours:\u003c\/strong\u003e Black, White, Beige, Marble Effect, Green\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 nano setups\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eShrimp colony tanks — Neocaridina cherry shrimp, Caridina crystals, blue dreams\u003c\/li\u003e\n  \u003cli\u003eBetta nano tanks 15-25L with shrimp tankmates\u003c\/li\u003e\n  \u003cli\u003eShrimplet grow-out tanks (separating fry from adults)\u003c\/li\u003e\n  \u003cli\u003eFluval Spec, Edge and other nano kit tanks\u003c\/li\u003e\n  \u003cli\u003ePlanted nano aquascapes (iwagumi nano, Walstad-style bowls)\u003c\/li\u003e\n  \u003cli\u003eBreeding setups for nano fish — chili rasbora, ember tetra, CPD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSuitable species\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eNeocaridina shrimp — cherry, blue dream, yellow, green jade, snowball\u003c\/li\u003e\n  \u003cli\u003eCaridina shrimp — crystal red, crystal black, bee shrimp\u003c\/li\u003e\n  \u003cli\u003eSulawesi shrimp colonies\u003c\/li\u003e\n  \u003cli\u003eEndler and guppy fry during grow-out\u003c\/li\u003e\n  \u003cli\u003eShrimplets of any peaceful colony species\u003c\/li\u003e\n  \u003cli\u003eChili rasbora and other micro nano fish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to install in a nano tank\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003ePlace the tunnel against the back or side glass before adding substrate\u003c\/li\u003e\n  \u003cli\u003ePour 4-5cm of sand, fine gravel or aquasoil over the top\u003c\/li\u003e\n  \u003cli\u003eKeep both tunnel openings clear so shrimp can flow through\u003c\/li\u003e\n  \u003cli\u003ePlant moss or small low-light plants directly above to hide the substrate bulge\u003c\/li\u003e\n  \u003cli\u003eWithin hours, shrimp will start exploring — colonies typically claim it within a day\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eHow is this different from your other slim tunnels?\u003c\/h2\u003e\n\u003cp\u003eTwo versions of the same slim-profile design, sized for different tanks:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNano Shrimp Tunnel (this one):\u003c\/strong\u003e compact 133mm length, sized for nano tanks 10-30L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlim Aquarium Tunnel:\u003c\/strong\u003e longer 210mm and 266mm sizes, for medium and larger aquascape setups 40L+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your tank is under 30 litres, this is the right size. Above 30 litres, the longer Slim Aquarium Tunnel suits better — the extended interior gives larger shrimp colonies more grazing space.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3\u003eWill it actually fit in my 10-litre nano?\u003c\/h3\u003e\n\u003cp\u003eYes — at 133mm long it fits comfortably along the back glass of even small 10L tanks (most are 250mm+ long). Place it against the back wall to keep the substrate field clear for plants.\u003c\/p\u003e\n\n\u003ch3\u003eHow many shrimp will use it?\u003c\/h3\u003e\n\u003cp\u003eA colony of 10-30 shrimp will use the tunnel as shared territory, with several inside at any time. For larger colonies (50+ shrimp), you'll want either two of these tunnels placed apart, or the longer Slim Aquarium Tunnel for more interior space.\u003c\/p\u003e\n\n\u003ch3\u003eWill it work without burying it?\u003c\/h3\u003e\n\u003cp\u003eYes, but it looks better buried. The slim profile is designed to disappear under substrate — left visible on top, it reads as a plastic block rather than a natural feature. If you can't bury it (bare-bottom tank), our Coral Shelter Set of 3 is a better choice for visible nano decor.\u003c\/p\u003e\n\n\u003ch3\u003eIs it safe for shrimp moulting?\u003c\/h3\u003e\n\u003cp\u003eYes. PETG is shrimp-safe (no copper, no leaching) and the smooth interior won't catch moults. Shrimp often moult inside enclosed tunnels because they feel safest there.\u003c\/p\u003e\n\n\u003ch3\u003eWill fry grow up in it?\u003c\/h3\u003e\n\u003cp\u003eYes — shrimplets often hide inside the tunnel after hatching, where adults are less likely to disturb them. Many nano breeders specifically use compact buried tunnels for this reason.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use it for bettas?\u003c\/h3\u003e\n\u003cp\u003eYes — bettas in nano tanks (15L+) use it as a cave retreat. Useful especially if you keep a betta with shrimp; the shrimp use the tunnel as escape territory.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I clean it?\u003c\/h3\u003e\n\u003cp\u003eLeave it buried permanently — debris washes through during water changes. For deep cleaning, lift gently from substrate, rinse in tank water, reposition. Never use soap or detergent.\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. The Nano Shrimp Tunnel is our entry-point cave — proper aquarium hide for nano keepers without the price tag of larger decor. Free UK delivery over £30.\u003c\/p\u003e\n","brand":"Blubber Cove","offers":[{"title":"Standard \/ Black","offer_id":49761953874184,"sku":"","price":10.1,"currency_code":"GBP","in_stock":true},{"title":"Standard \/ White","offer_id":49761953906952,"sku":"","price":10.1,"currency_code":"GBP","in_stock":true},{"title":"Standard \/ Beige","offer_id":49761953939720,"sku":"","price":10.1,"currency_code":"GBP","in_stock":true},{"title":"Standard \/ Marble Effect","offer_id":49761953972488,"sku":"","price":10.1,"currency_code":"GBP","in_stock":true},{"title":"Standard \/ Green","offer_id":49761954005256,"sku":"","price":10.1,"currency_code":"GBP","in_stock":true},{"title":"Large \/ Black","offer_id":49761954038024,"sku":"","price":12.95,"currency_code":"GBP","in_stock":true},{"title":"Large \/ White","offer_id":49761954070792,"sku":"","price":12.95,"currency_code":"GBP","in_stock":true},{"title":"Large \/ Beige","offer_id":49761954103560,"sku":"","price":12.95,"currency_code":"GBP","in_stock":true},{"title":"Large \/ Marble Effect","offer_id":49761954136328,"sku":"","price":12.95,"currency_code":"GBP","in_stock":true},{"title":"Large \/ Green","offer_id":49761954169096,"sku":"","price":12.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0880\/7114\/3688\/files\/shrimp-underground-tunnel-a-safe-place-in-the-substrate-642217.jpg?v=1771496744","url":"https:\/\/www.getwarsplay.com\/products\/nano-shrimp-tunnel-compact-buried-cave","provider":"WarSplay","version":"1.0","type":"link"}