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Underground Aquarium Tunnel Cave – Substrate Hide for Shrimp, Betta & Fish Tanks
Underground Aquarium Tunnel Cave – Substrate Hide for Shrimp, Betta & Fish Tanks
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Create a secret world beneath the surface with this underground aquarium tunnel. Designed to rest under your tank substrate and against the glass, it offers fish, shrimp, and small amphibians a safe place to explore, hide or rest.
Available in two sizes and crafted in the UK from eco-friendly, aquarium-safe plastic, it’s perfect for aquascapers and pet lovers who want both form and function.
📏 Size Guide
Standard
– Full tunnel: 210mm (W) x 42mm (D) x 40mm (H)
– Openings: 35mm x 42mm
Large
– Full tunnel: 266mm (W) x 52mm (D) x 48mm (H)
– Openings: 43mm x 53mm
🌿 Eco & Pet Friendly
Made from sustainable plastic that’s safe for both freshwater and saltwater tanks. We also ship in recycled packaging where possible.
🎯 Perfect For:
Aquascaping setups, shrimp tanks, betta tanks, nano tanks, breeding fish, underground aquariums, or adding complexity to your reptile terrarium.
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Let customers speak for us
from 1199 reviewsA+ Seller. Thank you so much :)
Quick delivery, items are as expected and good quality.
Got this as a gift for my husband and he loves it! Great quality and fits a ton of cards.
My betta loves to make his bubble nests in here. And while he is not a long finned fish and doesn’t use it for resting, he does love to hang out in it. Only additional thing I did was get different grit sandpaper to smooth out the inside so nothing like loose filament would catch on fins.
Well I brought it for frogs, snails and fish. Didn’t know if they’d take a liking to it as that isn’t the intended audience but… wish I could add multiple pictures. Everybody adores it! I tend to keep it fastened down to one particular spot, as they’re less responsive when it’s floating around everywhere. Glad they enjoy it!
Absolutely perfect, what I expected! Pepper enjoyed wearing it, he didn’t even try to take it off!
Product was a good gift and is sturdy, however it is noticeably 3D printed, but not that big a deal
This item is excellent and exactly as described. Perfect for my bettas. They love them.
Works great and is easy to clean. I like that it's a single piece. It floats well and doesn't kick up the sand. I'd previously purchased a stick on diffuser with a swappable base, and it's not nearly as user friendly.