Aquarium accessory sera 32258 Blue – universal aquarium component, blue finish

sera 32258 Blue is a universal aquarium component finished in blue, suitable for both freshwater and saltwater aquariums. Designed as a functional and visual element, this accessory can be used during routine aquarium setup, for equipment mounting or to adjust the aquarium's appearance. The blue gravel is CO2 proof, neutral to water and does not influence water parameters or tint the water. With a rounded grain size of 2–3 mm, it supports plant anchoring and is appropriate for keeping bottom-oriented species such as catfish. The product has been independently tested and evaluated according to DIN 38415-6 / EN ISO 15088 and is proven pollutant-free, making it suitable for sensitive animals and breeding applications.

Advantages

The blue finish provides a consistent visual appearance without leaching color into the water, while the neutral material maintains stable water parameters. Rounded grains of 2–3 mm encourage plant root establishment and reduce abrasion to delicate fish. The product's CO2 resistance and independent evaluation to DIN 38415-6 / EN ISO 15088 confirm suitability for sensitive species and breeding. Its universal design allows use in a variety of tank setups and with common aquarium equipment.

Suitable for

• Freshwater aquariums
• Saltwater aquariums
• Planted tanks where plant rooting is needed
• Environments with bottom-dwelling fish such as catfish
• Setups requiring a neutral, non-tinting substrate or decorative element

Key specifications

• Color: blue finish
• Grain size: 2–3 mm (rounded grains)
• CO2 resistance: CO2 proof
• Water interaction: neutral towards water; does not affect water parameters or color
• Safety evaluation: independently tested according to DIN 38415-6 / EN ISO 15088; pollutant-free
• Compatibility: suitable for fresh and saltwater aquaria

How to use

Rinse the gravel briefly with tap water before adding it to the aquarium to remove any loose dust. Spread an even layer across the tank floor to the desired depth appropriate for plants and inhabitants; a depth of 2–4 cm is typical for decorative use, while planted setups may require a slightly deeper layer to support root growth. Position equipment and décor on top of the gravel as needed. Monitor water parameters after installation as part of standard aquarium maintenance, although the material itself is neutral and non-tinting.

Usage recommendations

For planted aquaria, combine the gravel with root fertilisers or a nutrient-rich substrate layer if long-term intensive planting is planned. When keeping bottom-dwelling fish, provide hiding places and ensure the gravel layer is not too deep to avoid compacting fine sediments. Regular gentle vacuuming during water changes will keep the gravel clean without removing the rounded grain structure.