Devil Stones 1kg – black pebbles, 20–50mm
Black washed river pebbles (20–50 mm, 1 kg) for aquarium use as a main substrate or as a decorative island…
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Find a productProduct description
Devil Stones from Eco Plant is a 1 kg pack of black rounded pebbles, graded 20–50 mm, intended for aquarium keepers who want a natural-looking base layer or hardscape element without sourcing construction gravel. The stones are sold washed and already colonised with nitrifying bacteria, so they can be set up as soon as they are rinsed.
Why it matters
- The pebbles are taken from aquatic environments, not from building suppliers, which is the manufacturer's stated reason for their use in water.
- According to the supplier, the gravel does not cause pH shifts and contains no harmful substances; the only bacteria present are nitrifying ones.
- The supplier states that the neutral material, its structure, porosity and dark colour do not promote algae growth.
- Because the stones are wet on arrival, they should be rinsed under lukewarm running water to remove the film that forms from abrasion during transport.
Specifications
- Brand: Eco Plant
- Symbol: ECO PLANT DEVIL STONES
- EAN: 5903900046800
- Grain size: 20–50 mm
- Colour: black
- Form: rounded pebble (otoczak)
- Finish: washed
- Net weight: 1 kg
What it works with
The pebbles can serve as the main substrate or as a decorative feature such as an island or a river bed in an aquarium. Plants can be planted directly into this material, so it suits planted aquascapes. The grain size is listed as 20–50 mm, which determines how it fits into a given tank design.
Technical specification
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Frequently asked questions
You can use them either way: as a main substrate or as decorative elements such as an island or a river bed. The grain size is 20-50 mm.
Yes, aquatic plants can be planted directly in this material.
Yes. During transport the stones rub against each other and leave a film of residue, which should be rinsed off under running lukewarm water. Rinsing takes little time and, according to the manufacturer, does not wash out the beneficial bacteria if water is lukewarm rather than hot.
The stones are taken straight from the water and sealed in a double bag. According to the manufacturer, this keeps the bacteria alive and allows them to multiply.
The manufacturer states that the pebbles are natural, taken from aquatic environments, not from construction suppliers. According to the description, they do not cause pH swings, contain no harmful substances, carry only nitrifying bacteria, and do not promote algae growth.
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