Bright Stones for a Happier Tank
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Add a splash of color to your aquarium with smooth, natural crystal gravel.
These polished crystal stones bring gentle sparkle and warm charm to any fish tank. They brighten the space, look natural under aquarium lights, and help create a cozy home for your fish. Each 100g bag comes packed with color options so you can match your style and tank setup.
A simple way to refresh your tank’s look.
✔ Made from natural crystal stones
✔ Smooth edges for a gentle, fish‑friendly finish
✔ Easy to place in any aquarium setup
Rinse the stones before adding them to your fish tank. Available sizes include 3-5mm, 5-7mm, 7-9mm, and 9-12mm.
We are proud to offer duty-free, reliable, tracked shipping— delivered to your door in over 200 countries worldwide!
Below you can check our average shipping times:
Domestic USA Shipping: 2-9 business days
US & Canada: 7-18 days
Europe: 7-18 days
Europe Plus*: 8-30 days
Australia, New Zealand: 7-18 days
Hong Kong, Singapore: 7-18 days
Rest of the world: 8-30 days
*does not include processing times up to 2 business days or longer in peak periods
Primarily we ship out from fulfillment centers in the United States, Eastern Asia and Western Europe. If the item you've purchased is out of inventory in your nearest location, we'll send it directly from our production lines at the same delivery times as stated in our shipping section.
Are these stones safe for all fish?
Yes, the natural crystal stones are smooth and non‑toxic for most freshwater aquarium fish.
Do I need to wash the gravel?
A quick rinse removes any dust and keeps your aquarium water clear.
Can I mix different colors?
Yes, you can blend colors to create your own look and match your tank’s style.
Bright crystals boost the look of your tank without effort.
Smooth stones help create a safe and cozy space for fish.
Crystal tones blend well with plants and decor for a calm vibe.
Just rinse and add to your tank—no special setup needed.
Choose from many colors and sizes to match your aquarium theme.
A little sparkle goes a long way for your tank.
| Features | MK Aquarium | Knock-Offs |
|---|---|---|
| Natural crystal material | ||
| Wide range of colors | ||
| Polished smooth finish | ||
| Multiple size options | ||
| Fish‑friendly edges | ||
| Easy to rinse and use | ||
| Good for decorative layouts | ||
| Helpful for natural‑looking scapes | ||
| Stable color tones | ||
| Designed for aquarium use |
A 100g bag works well for small decorative touches. Larger tanks may need several bags depending on the layout you want.
The natural crystal tones hold up well under normal aquarium lighting.
Yes, it works nicely as a decorative top layer around plant bases.
No, each stone is polished for smooth edges that are gentle for fish.
These natural stones are generally stable and not known to change water conditions.
Yes, the smooth texture and small pieces work well for betta setups.
Yes, just keep the stones settled at the bottom so they don’t get pulled into strong intakes.
Yes, with supervision. The stones are small and easy to place.
Yes, the smaller size options make it easy to decorate tiny tanks.
