• The Corner Hollow - Hollow
  • The Corner Hollow - Hollow
  • Triple Entrance Aquarium and Terrarium Corner Cave - Leopard Gecko Hide - Hollow
  • The Corner Hollow - Hollow
  • The Corner Hollow - Hollow
  • The Corner Hollow - Hollow
  • The Corner Hollow - Hollow
  • The Corner Hollow - Hollow
1 10

The Corner Hollow

The Corner Hollow

Color: Black
Size
€39,90
€39,90
Sale Sold out

Handmade to order

30-Day Money-back

Aquarium safe PLA

Free shipping over 30€

1-4 Days production

5-8 Days to EU/USA

We stand behind this cave

Tested for 1+ year in real setups & backed by a 2-year warranty.
Product description & dimensions

The Corner Hollow Aquarium Corner Cave Specifications:

Material: Aquarium corner cave made with aquarium safe PLA, it does not affect water parameters

Dimensions:
225 x 225 x 140 mm / 9 x 9 x 5.5 inches
Opening: 125 x 110 mm / 5 x 4.3 inches

175 x 175 x 120 mm / 6.9 x 6.9 x 4.7 inches
Opening: 97 x 85 mm / 3.8 x 3.3 inches

Cube size in the pictures: 250x250x250mm
Cave size in the cube pictures: 225x225x140mm

Shallow aquarium size in the pictures: 450x280x180mm
Cave size in the shallow tank pictures: 175x175x120mm

View full details

Easy to set up and style

Just place it against the glass, add substrate around it, and place plants over and inside it. That’s it. In just a few simple steps, it creates a mesmerizing underground world that adds depth, shelter, and a natural look to your setup.

Easy to clean

This cave features a large entrance that makes it easy to remove debris or waste. As aquascapers, we design every cave with easy maintenance in mind, so it stays practical in real long term planted tank use.

Functional shelter

It creates natural hiding spots, offers protection from light, helps reduce stress for fish and shrimp. Aquarium-Safe Material: Crafted from biodegradable, biosourced, and recyclable PLA, it does not affect water chemistry.
  • 5 stars: 108 (90%)
  • 4 stars: 7 (6%)
  • 3 stars: 2 (2%)
  • 2 stars: 1 (1%)
  • 1 star: 2 (2%)
A
Amy

Received promptly! Love the hides!

C
Camille

My new betta loves his cave! Thank you!

A
Alicia

Schöne Höhle für meine Garnelen 😊

Z
Zak

Had to keep reminding seller to ship the item and received it after expected date but product was great and he was responsive during original ordering process.

E
Ela

Have purchased several items and absolutely love them all! Super high quality with a smooth but textured surface making them very easy to use and maintain within my aquariums. Always my go to and the continued new releases will keep me coming back! Highly suggest!

S
Sophie

Fantastic tunnel. My fish love it and it looks great in the tank!

M
Mandy

Alles Prima, vielen dank. 😀

A
Aimee

It is worth the money. Very well made and sturdy. I would buy from this company again.

V
Verne

The little K looks great and turned out perfect for my dart frog terrarium

M
MissyRissi

hat etwas gedauert, aber es passt super in mein Aquarium. bin sehr zufrieden

M
Mario H.

Vielen Dank für die tolle Arbeit!

K
Kitty

Looks great, perfect for my tank!

K
K.

Very small compared to photo

M
Meg

The caves are already shrimp-approved. Thank you!

M
Meg

It looks great in my tank, thank you!

D
Dusking

Articles bien arrivé et conforme

A
Alex

great item to keep clutches of fry from my lotyls!

C
Coyote

solid. looking forward to using it

J
John

Excellent most excellent, the excellent est

R
Rebekah

This cave was just what I was looking for! The customer service was also wonderful, I made a mistake during ordering and this shop was able to help me resolve it!!!

R
Rachel

What I was looking for. It worked great for my cube aquarium. Took awhile to ship. Understandable as it is made to order. There was no estimate in shipping policy.

R
Rugged R.

better than expected

B
Brandon

it looks great and my kuhli loaches love it

O
Onika

item as described

B
Benjamin

Great items and great customer service

M
Maximus

I am in the process of moving and hadn't realized I put my old address not my new one but he got my mailing address fixed and its much bigger then I expected even with me measuring my tank it sadly didn't fit maybe my tank isn't the measurements I thought it was but oddly it does not fit flush against the walls some parts of it touches the walls and some doesn't sound my substrate falls through I'm looking to size up my shrimp tank anyways so maybe it will fit the other tank better :)

J
Jana

Will look super nice in my tank

K
Kate

Cheaply made and a very misleading ad. Certainly not woth a full tank of gas.

M
Michael

I am happy with the product, it looks good in my tank.

S
Sl

Just what I was looking for.

R
Ryan

Quality piece

l
ladydy48

Looks nice in tank. Item as described.

D
Dwayne

An Excellent Trade/Transfer ----- Thank You

K
Karann

such a cool piece for my aquarium!

P
Priscila

Overall, it is a nice product and looks great in a scape. The product had a nice finish and the material felt durable and of good quality. My only issue with it was the fact that it does not perfectly align along the corner (or at least mine didnt). So there were gaps between the cave and the glass. When placing my aquasoil in I had a hard time since the soil kept falling through the gap when I filled up the tank. It became very frustrating to be honest since my plants would become displaced, or my sand at the bottom of the cave became mixed with aquasoil. If it werent for this issue i would give a full 5 stars. Luckily its an easy enough work around but I would prefer if I didnt need to considering the price of the product.

Loved by our community

why hollow?

Not all aquarium caves are created equal

Mass-produced and generic cave decor is designed to look good in photos. We create caves for real life use.
Hollow Generic caves Mass produced
Easy to clean & maintain
Tested in planted tanks
Aquarium-safe materials
Blends naturally into the tank
Designed by an aquascaper
GOT QUESTIONS?

Frequently Asked Questions

About the caves

No. Every piece is made from aquarium-safe PLA that is biodegradable, biosourced, and fully inert. It will not affect your pH, hardness, or any other water parameter. Safe for fish, shrimp and marine aquariums.
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.

Shipping and ordering

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.

About Hollow

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.
👍 just as described and fast
Jana