| 摘要 |
A method is described for improving water quality or correcting and adjustin g important chemical parameters of the water in biological tank systems, such as aquaria (warm, cold, fresh or salt water), garden ponds, carp pools, water gardens and large aquaria (zoos, public aquaria) whereby the following are added to the tank system individually or arbitrarily combined: a) for reduction of phosphate concentration, at least one highly or poorly soluble Al3+, Fe3+, TiO2+, ZrO2+ or Ca2+ salt of an organic carboxylic acid, optionally mixed with an organic carboxylic acid; b) for reduction of nitrat e concentration or limiting nitrate increase, at least one water soluble N-fre e biologically degradable organic compound; c) for an increase in carbonate hardness or the HCO3- concentration, at least one alkali or earth alkali met al salt of an organic carboxylic acid; d) for an increase in total hardness or the concentration of Ca2+ and Mg2+ hydrogen carbonates, a mixture of at leas t one Ca2+ and Mg2+ salt of organic carboxylic acids and e) for an increase in CO2 concentration at least one biologically degradable compound and an appropriate single- or multi-component product.
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