Yes. Our pieces are suitable for terrariums and reptile setups as well as aquariums. Check the individual product page for compatibility details, especially dimensions, if your animal fits through the entrance comfortably, you are good to go! The rest is design preference. Disclaimer: Do not put it directly near high heat (45°C+/113°F+)

The large openings are intentional, so most caves are easy to clean with a standard aquascaping tool kit. A magnetic cleaner and a soft brush or toothbrush are highly recommended for the surrounding glass. We use the Chihiros Mini on all of our cave tanks. A regular hose is used to clean debris inside the cave.

The first step is to check the dimensions on the individual product page, below "Add to cart". If your animal can comfortably fit through the entrance, you are good to go. Beyond that, the choice is mostly visual: most caves can work in most tanks. A smaller cave works well as a subtle detail or accent piece, while a larger one creates a stronger focal point in the scape. Do not overthink it, our caves are designed to blend naturally into the setup, regardless of the style of your tank. That is exactly what they are made to do.

Processing times: 1 - 4 days (every item is made to order and hand finished). Delivery times by destination: EU, UK and USA: 5 - 8 days. Canada: 7 - 10 days. Asia: 12 - 30 days. Australia and New Zealand: 12 - 20 days.

They are designed and made in house. Built to be sturdy and durable, they are made to hold up well during normal use and transit. Packed with care and shipped globally with tracking.

We offer a 30-day money back guarantee. If you are not happy with your order for any reason, contact us and we will sort it out. No complicated process, no awkward questions.

Absolutely. Use the live chat, WhatsApp (+356 9997 2230) or the contact page and we will get back to you quickly. We are happy to help you choose the right size or colour for your specific tank and animal.

Orders placed in the USA are shipped from our partner based in Kansas. Orders placed anywhere else in the world are shipped from Malta, Europe. Products are exactly the same in both places.

Hollow is a small independent business run by an aquascaper. Every design is created and tested in real planted tank conditions before it goes on sale. This is not mass-produced or dropshipping.

We started on Etsy and built our reputation there — that is where our 2,000 reviews come from. This website gives us more flexibility and lets us serve customers directly. You get the same quality on Etsy and on our website, however delivery is quicker if you order here.

Yes! Contact us on WhatsApp +356 9997 2230, tell us what animal and tank size you have. We will get back to you with a recommendation and price.