How To Increase The Hardness Of The Water | The Science

The Science

# How to increase the hardness of the water

To raise and maintain aquarium fish takes to water hardness in the aquarium has been constant. If the aquarium soil consists of coarse sand and pebbles of the river, the water in the tank will always have a certain rigidity. In aquariums, which contain fish and shellfish, with time the stiffness is reduced due to the consumption of shellfish calcium to build shells. Therefore, it is necessary to increase periodically.

### You will need:

- carbonate rocks; - 10% solutions of CaCl2 and MgS04; - 25% solution of magnesium; - Distilled, rain and melt water.

## Instruction how to improve the hardness of the water

Step 1:

To increase the hardness of the water, it will boil in enamelware for one hour. Drain carefully two-thirds of the water, rest, rich in calcium, slowly pour a thin stream into the aquarium.

Step 2:

Prepare the pharmacy or buy a 10% solution of calcium chloride (CaCl2) and 10% solution of magnesium sulfate (MgS04). To increase the hardness of the water by 1 ° dGH make 100 liters of water 18.3 ml of a 10% solution of calcium chloride (CaCl2) or 19.7 ml of a 10% solution of magnesium sulfate (MgS04). To maintain the fish and plants the required ratio of ions add these solutions in about equal amounts.

Step 3:

To increase the carbonate hardness in aquarium water, place the carbonate rocks (dolomite, chalk, marble, etc.) Or pass it through marble chips. But remember that the dissolution of carbonate rocks in the water is possible only in the presence of carbon dioxide: CaCO3 + CO2 + H2O -gt; Ca (HCO 3) 2 To do this, add the water, sparkling water or CO2 saturation of water use a special device.

Step 4:

To increase the carbonate hardness of 1 ° dKH Dissolve 1.5g in 100ml MgSO3 (magnesium carbonate) ili1,8 g CaCO3 (calcium carbonate). But the best use both salts in equal parts. Add the water to the aquarium 25% solution of magnesium rate of 1 ml per 1 L of water - as you increase water hardness on 4H °.

Step 5:

Mix settled tap and distilled water. If the water hardness of the tap - N 10 °, then mix 7 parts of distilled water with 3 parts tap water to get the aquarium water hardness 3 ° N.

Step 6:

In the absence of distilled water in urban and rural areas with low air gassed replace it with rainwater or melted snow, the rigidity of which is 2-3 N °.

Step 7:

Put on the bottom of the tank shell or coral chips rapanov. Pre-hour boil them. Change 1 time per week of the total volume of 10-15% water, not overpopulate aquarium, and the water hardness is not constant.