In a city water supply system an indicator of hardness of water quite high therefore often the aquarian needs to lower it. Inhabitants of an aquarium well feel in water with the level of rigidity from 3 to 15 degrees. Some species of snails cannot live in soft water as their sinks begin to collapse. Viviparous small fishes have to contain in water with rigidity about 10 degrees. For neon small fishes the indicator of hardness of water should not exceed 6 degrees. Sagittariya and a water fern well sprout in water with rigidity 10-14 degrees, and the uviranda perishes even at 5 degrees.
Instruction
1. Do not forget to consider that the level of hardness of water changes depending on a season. Much know that boiling well reduces this level, but it belongs only to a temporary component of rigidity. In steady seasons - by the end of summer and by the end of winter - it increases, and rains and floods lead to softening of water. Therefore in spring time prepare for spawning of fish and plants begin to grow.
2. Perfectly such plants as elodeya, an alga Chara, a rogolistnik soften water. Their leaves and stalks are usually covered with a crust which is a deposit of salts of calcium. Plants do not absorb carbon dioxide at night, and in the course of breath of living beings in a reservoir it collects in an aquarium, as a result hardness of water increase. If there are sharp fluctuations of level of rigidity at night and in the afternoon because of existence of a large number of these plants, it can be ruined for only one night of all animals: they will just choke. For this reason water "blossoming" - very unpleasant and dangerous phenomenon in an aquarium. Remember that it can begin in brightly lit aquariums with the decaying forage remains. Addition of the distilled water will help to reduce a constant component of hardness of water.
3. Except usual boiling it is possible there is one more method of receiving water with rigidity which level is close to zero. For this purpose it is necessary to fix a glass plate before a nose of the boiling teapot. At its bottom edge establish capacity for collecting the condensed vapors. The water received in capacity thus will have the rigidity close to zero value.
4. Hardness of water can be reduced a simple vymorazhivaniye. In an empty polyethylene bottle pour 3/4 waters, close and put in the deep freeze. When about a half of water freezes, get capacity from the fridge. After that accurately cut a bottle and take the frozen part of water. This piece of ice, having thawed, will become water with very low indicator of level of rigidity.