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sera guide - Marine aquariums

27 You can check ammonium/ammonia, nitrite and nitrate with the sera NH4/NH3-Test, the sera NO2-Test and the sera NO3-Test, re- spectively. Billions of purification bacteria in volcanic rock for permanent pollutant breakdown in aquariums sera marin bio reefclear contains bacteria cultures in finely ground volcanic rock. There- fore, they already bring their settling space with them and can start water purification not only in the filter but also within the entire aquarium. sera marin bio reefclear is simply poured onto sera siporax and directly into the aqua- rium. Brief mineral cloudiness will occur after addition to the aquarium water. It will vanish after some hours as the cleaning effect takes place. During this time, the volcanic rock binds floating matter that cause water cloudi- ness, and will leave the water as clear as nev- er before. sera marin bio reefclear should be added regularly in weekly intervals as to achieve this positive effect permanently.