Please activate JavaScript!
Please install Adobe Flash Player, click here for download

sera guide - Shrimps and crayfish

18 Water conditioning Crustaceans generally are even more sensi- tive to chemical water pollution than many fish species. It is therefore necessary to condition tap water. Always add sera aquatan or sera blackwater aquatan, specially developed also for crustaceans, to the water every time you fill the tank, be it the first filling or a partial water change. They will immediately bind the heavy metal ions, clarify the water and neutralize toxic substances such as aggressive chlorine. It is additionally recommended, e.g. during the biological activation phase of if necessary, to use sera super carbon as an active carbon that reliably removes other toxic sub- stances from the water. Also consider the correct water hardness. The water hardness describes the concen- tration of dissolved alkaline earth metals. Soft water contains less of these ions – mainly calcium and magnesium – than hard water. Most shrimp species have adapted to rather soft water in their original habitats. Conditioning the water Filling in water correctly First place a shallow plate on the gravel as to avoid water swirling up the gravel and the under gravel bottom substrate. Then pour the lukewarm (24 – 26°C / 75 – 79°F) water on top of it until the tank is filled by two thirds. The sera precision thermometer makes temperature control easier. 18