Stone Arch Boulder Bridge Hide | Aquarium, Vivarium and Terrarium Decor

Ready to use, install or paint. Your piece is 3D printed in your chosen filament colour and supplied unpainted. Enjoy it as it is or paint it to create your own finish.

Add a dramatic, natural-looking centrepiece with this detailed stone arch boulder bridge. It looks like rugged, stacked aquascaping stones and combines the look of a natural rock formation with the practical use of a hide, swim-through and sheltered resting space.

The low-profile arch gives a realistic stone look without overwhelming the layout. The open passage beneath makes a shaded hideout for fish, shrimp and other small inhabitants, while the layered boulders add depth and a strong hardscape focal point.

At a glance

• Size: 16 x 9 x 6 cm (6.3 x 3.5 x 2.4 in), width x depth x height. Need a different size? We can scale it to the size you need. Contact us for a quote.
• Material: PETG, made for aquariums and terrariums. Resists water, humidity and heat lamps.
• Floats: Printed PETG pieces can float because they contain air. For aquarium use, secure the base with aquarium-safe silicone or a suitable aquarium adhesive as described under “Good to know”.
• Safety: PETG is deemed safe for plants, fish, insects, reptiles and animals.
• Finish: unpainted, in the colour of your choice.
• Made to order: ships within 7 business days.
• Free shipping: free delivery to Canada, the US and select European countries. Duties and import fees to the US are prepaid by us.

Details

• Natural arch shape for a realistic rock bridge look.
• The open tunnel below gives shelter, cover and swim-through space.
• Low, wide footprint that is easy to place in many layouts.
• Works as underwater decor or as a dry or humid hide in reptile and amphibian setups.
• Also a natural terrain element for tabletop displays and fantasy or nature-themed dioramas.

Where it works

Freshwater and planted aquariums, shrimp tanks and small fish tanks, aquascapes, terrariums, paludariums and vivariums, reptile, amphibian and invertebrate enclosures, and diorama and terrain displays.

Colours

First choose a finish (Basic, Matte, Marble, Sparkly/Galaxy/Metallic or Glow-in-the-Dark), then pick a colour from that finish. Sparkly/Galaxy/Metallic includes our Galaxy, Sparkly and Metallic colours. There are 89 PETG colours in total, and the colour charts at the end of the photos show each one. Want something that is not listed? Contact us and we will try to source it.

Quality and care

Printed slowly at high resolution with thick walls, so it is sturdier than most printed decor. Fine layer lines and small variations are normal and make each piece unique. PETG is non-toxic and easy to clean with soap or alcohol. Colours can look slightly different on screen.

Good to know

• Anchoring in an aquarium: Bond the base to a flat stone or acrylic sheet with aquarium-safe silicone, or with hot glue or cyanoacrylate superglue specifically suitable for aquarium use. Follow the adhesive manufacturer’s surface preparation and full curing instructions before placing it in the aquarium. Where the design allows, a few small holes through the underside into enclosed air pockets let water in and air out, reducing buoyancy.

• Measure the inside of your enclosure before ordering, and leave a little room for installation.
• Some photos show hand-painted examples. This piece ships unpainted.
• Some photos are lifestyle mockups shown for context.

Design licensed to Molten Modern by Crizzy Designs.