Dennerle Kristall-Quarzkies SG – Natural Aquarium Gravel in Slate Grey
Dennerle Kristall-Quarzkies SG is a high-quality natural quartz gravel for aquarium landscaping. It is used as a passive substrate that does not chemically affect the water and is suitable for both freshwater and marine aquariums.
Natural quartz gravel in elegant slate grey – ideal for natural-looking underwater landscapes
Passive substrate: pH-neutral and without impact on water chemistry
10 kg bag for generous coverage or as a base for plants
Versatile: as substrate, top layer, or in combination with other substrates
Unlike active substrates, the water chemistry remains unchanged – ideal for sensitive fish or invertebrates. The uniform grain size provides an attractive appearance and gives plants a stable hold.
Ideal for...
Dennerle Kristall-Quarzkies SG is aimed at aquarists looking for a decorative but neutral substrate. Perfect for aquascaping projects, community tanks, or specialized biotopes where water parameters need to be individually controlled.
How to use Dennerle Kristall-Quarzkies SG
Before first use, rinse the gravel thoroughly with clean water until the water remains clear. Then distribute evenly in the aquarium – as the sole substrate or as a top layer over a nutrient base. The recommended layer height is 3–5 cm.
Dennerle is a renowned German manufacturer of aquarium products with over 50 years of experience. The brand stands for innovative substrates, plant care, and water treatment. Dennerle products are appreciated by aquarists worldwide.
Dennerle Kristall-Quarzkies SG is a natural quartz gravel in slate grey color, used as a passive substrate for aquariums. It does not affect water chemistry and is suitable for freshwater and marine tanks.
Yes, the gravel is passive and can be used as a top layer over a nutrient substrate. Plants find good anchorage, but it does not provide nutrients – a bottom fertilization is recommended.
The gravel has a typical grain size of 1–3 mm, optimal for most aquariums and aquascaping projects.
The bag contains 10 kg of gravel. For a 60 cm tank (approx. 60 liters), a layer height of 4 cm requires about 6–7 kg – the bag is sufficient for small to medium tanks.
Yes, it is recommended to rinse the gravel with clean water before use to remove dust and fine particles. Afterwards it can be spread directly in the aquarium.
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