JBL ProFlora u401 Mode D'emploi page 23

valve to "man open": Menu key > select valve > press OK > with selection keys select "man
open"> press OK. For u403 continue as for u401 and for m603 / m1003, as for m601. After
the reactor has run in, set the integral solenoid valve to "auto": Menu key > select valve >
press OK > with selection keys select "auto"> press OK. Then set the optimum pH level for
your aquarium and the required number of bubbles on the pH computer as described in the
instructions for use enclosed separately. The pH computer now automatically regulates
the pH level and the CO
13 How much CO
13.1 pH level, CO
The three parameters, pH value, CO
as they are interdependent.
When CO comes into contact with water, a certain amount of carbon dioxide is produced which
2
reduces the pH value. The greater proportion remains dissolved in the water in the form of gas
and serves as an important nutrient for plants. Therefore CO
level of pH in the aquarium, which is usually too high, to a level conducive to fish and plants
whilst at the same time providing plants with their main source of nutrient. Thus luxuriant plant
growth and lively, healthy fish are guaranteed.
How much CO is needed to maintain a particular pH value depends on the CH in the aquarium.
2
The higher the CH, the more CO
content can be calculated. The following table saves you making the calculations and also
shows the pH values which you can set as an optimum value without any risk to your fish.
CO content depending on pH value and CH
2
Too much CO
auto pH curve
All manuals and user guides at all-guides.com
supply for your aquarium.
2
is needed?
2
and carbonate hardness (CH)
2
content and carbonate hardness are inseparably linked,
2
is required. Once the CH and pH values are known, the CO
2
CO correct
has two benefits: it reduces the
2
Too little CO
2
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