Rhinos Reef // Safe 3D prints
Built for the reef
Reef-safe 3D-printed frag racks, coral mounts, and gear. Designed and printed in-house under blacklight, one reef at a time.
Shop by category
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Logo Lights
Light up your reef room, booth, or setup with custom Rhino's Reef...
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FRAG RACKS
Somewhere to put all those frags. Our frag racks keep your coral...
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CLEAR SERIES
CLEAR SERIES
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FILTER CUPS
Ditch the soggy filter sock. Our filter cups are a reusable, easy-to-clean...
The lineup
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2” DiscPlays
Regular price $8.00 USDRegular price -
2” Mushroom Detention Center
Regular price $5.00 USDRegular price -
3" Magnetic Discplay
Regular price $25.00 USDRegular price -
3D-Printed Articulating Starfish Flexi Toy – Lifelike Marine Toy for Collectors & Ocean Lovers | Rhino’s Reef
Regular price $15.00 USDRegular price -
3x5x5 Filter Cup
Regular price From $25.00 USDRegular price -
3” Detention Center
Regular price $8.00 USDRegular price -
3” Discplays
Regular price $8.00 USDRegular price -
4” Filter Cup 4”x3.5”
Regular price $15.00 USDRegular price
Reef-safe, no guesswork
Made from reef-safe PETG
Most printed gear just says "reef safe" and leaves it there. Here is exactly what ours is made of, and why we trust it in our own tanks.
The reef-keeper's filament
We print in PETG, the reef community's go-to for saltwater, with good chemical resistance and low water absorption.
Pure filament, no fillers
No dyes, glow additives, or composite blends, since those are what can leach. Just clean PETG.
Never PLA or resin
For anything that lives in your tank we use PETG, never PLA or resin, which break down or can leach over time.
Tank-ready in seconds
Give every new piece a quick rinse in RO-DI water and it is ready to drop in.
Printed to order in the USA
How it works
Filament to frag
You pick the color
Choose your rack, size, and colorway. Every order is printed fresh, not pulled off a shelf.
We print it reef-safe
Aquarium-grade PETG, run on our own farm of printers and quality checked by hand.
It ships to your reef
Printed to order and shipped from the USA. Drop it in and stay salty.
Our story
Printed in-house, one reef at a time
No overseas molds, no mass production. Every piece comes off our own printers, in our own blacklight lab, then ships straight to your tank.
Before you ask
Reef-safe FAQ
Is your 3D-printed gear reef-safe?
Yes. We print in PETG, the filament the reef community trusts for saltwater, and we skip the dyes and composite additives that can leach. For anything that lives in your tank we never use PLA or resin.
Will the plastic leach into my water?
PETG has good chemical resistance and low water absorption, and we print with pure filament, no colorants or fillers. Give any new piece a quick rinse in RO-DI water before it goes in and you are set.
How long will it last underwater?
PETG holds up. We have run our own pieces for years with no warping or cracking. It does not slowly break down the way PLA does in saltwater.
Will it grow algae, and how do I clean it?
Like anything in a reef tank, it can pick up algae or coralline over time. A toothbrush or a quick soak handles it, and the honeycomb design rinses clean easily.
How do I mount coral to it?
Super glue gel (cyanoacrylate) is the move because it sets underwater. Dab it on the frag, press it onto the rack or plug, and hold for about 60 seconds.
Where do you ship from and how fast?
Everything is printed to order in the USA. Because a lot of our work is custom, most orders take about 7 to 14 days depending on size, and you see the current estimate at checkout.