Quick Summary
Amtra Polychrome is a 2 kg decorative aquarium substrate with 3-4 mm grains. It is described as a natural gravel for aquarium bottoms, intended to create a decorative base layer in the tank.
The main buying checks here are the grain size, the 2 kg pack size and whether the substrate suits the look and layout you want in the aquarium.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Amtra. Useful for confirming the exact product line. |
| Product type | Natural aquarium gravel and decorative substrate. Intended for aquarium bottom use. |
| Pack size | 2 kg. Check this against the area and depth you plan to cover. |
| Grain size | 3-4 mm. Grain size affects the look and the finished substrate texture. |
| Intended use | Freshwater aquariums, with advice also given for seawater tanks. |
What to Compare Before Buying
- Pack size: This pack contains 2 kg, so compare it with the amount needed for your tank layout.
- Grain size: The 3-4 mm grain size gives a fairly defined decorative finish. Check that this look suits your aquarium setup.
- Tank use: It is presented as suitable for freshwater aquariums, with advice also given for seawater tanks. Confirm it matches your intended aquarium type.
Before You Decide
Confirm the 2 kg pack size and the 3-4 mm grain size before choosing an offer. If you are planning a layered layout, check that the amount is enough for the front and back depth you want to create. Follow the manufacturer’s instructions for use and setup.












