Lucky Critter Aquarium Underground Tunnel Cave Natural Curve Two Hole | Viewing Fish & Shrimp Under Gravel Tunnel | Fish Tank Decor Decoration Hideout Perfect for Corydora Catfish, Kuhli Loach, Pleco

Cute! My betta loves it! Doesn’t float and is in great shape even with months of being in tank and despite moving it around a lot due to rearrangements I’ve done to the tank.

Such a perfect addition to my tank. It’s a perfect size and my fish and shrimp love it. It was such an easy installation, all I had to do was move the soil and bury it. That’s it. Definitely worth the money and It’s so much fun seeing my aquatic animals inside of it.

Works great! My shrimp and snails and cory’s love this! And it’s cute watching them shuffle about! Very sturdy material as well and large enough for even my betta to swim in alongside all the other critters and have plenty of room!

Convenient and sturdy , no real complaint about it , unlike other tunnels didnt break , no boyoince issues , no cracking or breaking , fish seem to not like to ise the tunnel , dont know why , because not even shrimp will go inside have to go e three stars , very well made , but like to see some thing swim into it

My fish and shrimp love this thing and I think it’s great that I can watch them. I haven’t had a problem in the world with this product.

A bit smaller cave than I pictured, but my shrimp and minnows enjoy having a place to chill, not so much my koi, gold fish, and placo. But for the few bucks, it is well worth it to give my shrimp and minnows a place to nap.

After having established a tank over a couple months, I noticed my few Cory catfish weren’t quite as playful or energetic as they should be (even for their laid back personalities) and I asked my LFS if it was worth adding sand to the gravel substrate, or a partial area. It’s an ongoing debate as I now know whether Cory’s should or shouldn’t have sand to mimick their natural habitats to make their little lives happier. This product was a PERFECT addition to my tank even though the LSF store said they’d be fine with gravel…I looked at similar products but the reviews speak for themselves on this one! Very durable with some weight, smooth edges and overall very high quality cave feature. Although it took some careful rearranging and cleaning of my tank, getting the premium sand rinsed in the sink and scooped into this cave unit ahead of time, I was able to lower it carefully into the existing tank without making a giant sand mess. If you’re starting from scratch this would be super easy to add before water! The pic only shows one of my few Corys, but they all found the sandbox cave within 24 hours and there’s 100% noticeable difference in their more playful behavior. Our bristlenose sucker, snail, and shrimp all take turns in and out of this unit too!

These caves are an excellent way to add privacy and separation for fish that need a little quiet time for themselves. Easily to install and the size was expected. My corydora’s love the two we have installed in their tank.

So cool.. My fish love it!!

Great little underground cave. My fishes love it!

Big holes , easy to place , no sharp parts ! Perfect for my betta tank.

Cute but wish it was bigger

Absolutely love this, if I get another aquarium I will be buying more of these.