Dennerle CarboNIGHT M400, Руководство по эксплуатации

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6.7 If you want to know more: How to determine the CO2 content in the aquarium
CO2 concentration, carbonate hardness (KH) and pH are in a certain ratio to one another. The CO2 concentration of the water
can be calculated from the pH and carbonate hardness. Suitable pH and KH tests can be obtained from specialist retailers.
• Measure the carbonate hardness of the aquarium water.
• In the table, read the corresponding pH value for the desired CO2 concentration. You should adjust the pH +/- 0.1 by
appropriately regulating the bubble count.
Example: Carbonate hardness 4 °d, desired CO2 content 20 mg/l = recommended pH 6.8
too much CO2 CO2 correct too little CO2
pH
KH 6,3 6,4 6,5 6,6 6,7 6,8 6,9 7,0 7,1 7,2 7,3 7,4 7,5
2 32 25 20 16 13 10 8 6 5 4 3 3 2
3 48 38 30 24 19 15 12 10 8 6 5 4 3
4 64 51 40 32 25 20 16 13 10 7 6 5 4
5 80 63 50 40 32 25 20 16 13 10 8 6 5
6 96 76 60 48 38 30 24 19 15 12 10 8 6
7 111 89 70 56 44 35 28 22 18 14 11 9 7
8 127 101 80 64 51 40 32 25 20 16 13 10 8
9 143 114 90 72 57 45 36 29 23 18 14 11 9
10 159 126 100 80 63 50 40 32 25 20 16 13 10
11 175 139 111 88 70 55 44 35 28 22 18 14 11
12 191 152 121 96 76 60 48 38 30 24 19 15 12
13 207 164 131 104 82 65 52 41 33 26 21 16 13
14 223 177 141 112 89 70 56 44 35 28 22 18 14
CO2 concentration in mg/l
7 Care and maintenance
7.1 Replacing disposable CO2 bottle
• The pressure reducer can be unscrewed at any time – the bottle valve closes automatically.
• Screw the pressure reducer onto a new CO2 disposable bottle (see 4.1).
The bubble count setting is retained.
• If it is not to be used for a longer period of time, unscrew the pressure reducer.
7.2 Replacing reusable CO2 bottle
• For an empty bottle: Close bottle valve. Unscrew union nut with 27 mm spanner and screw pressure reducer onto a new,
full reusable CO2 bottle. Open bottle valve. The bubble count setting is retained.
• For a full bottle: Close bottle valve. Turn the control knob of the pressure reducer all the way to „+“ to release any
residual pressure in the pressure reducer (the magnet valve must be open). Unscrew the union nut with a 27 mm spanner
and screw the pressure reducer onto a new, full reusable CO2 bottle. Open bottle valve. Reset bubble count.
• Always close the bottle valve if the CO2 supply is stopped for a longer period of time. If it is not to be used for a longer
period of time, unscrew the pressure reducer.