10
4. Maintenance and care
The quantity of CO2 dissolved in the water depends on the carbonate hardness. The higher it is,
the more CO2 gas is dissolved – at the same pH-value. The harmfullness limit of the CO2
concentration also depends on the carbonate hardness.
A so-called free carbonic acid (dissolved CO2 gas) belonging to it is necessary in order that the
calcium and magnesium ions (those which build carbonate hardness in connection with CO2 gas)
keep being dissolved. The free carbonic acid belonging to it (also called equivalent carbonic acid) is
important for the plants. The equivalence between carbonate hardness builder and CO2 is
stipulated from pH 7,1 – 7,4 for fresh water (8,1 – 8,4 for marine water). This quantity of CO2 is
not dangerous for fish, it does not depend on the carbonate hardness. The plants consume the
equivalent carbonic acid at the assimilation (photosynthesis). If it is not permanently
supplemented, the carbonate hardness builder can break down (so-called biogenetic
decalcification). This should be avoided in any case.
The CO2 system compensates for this loss. It is very important to replace only the CO2 and not to
supply the aquarium with more CO2. For a balanced ambience it is important to get the calcium
carbonic acid equivalence. The plants only receive enough CO2 (carbonic acid) when this
equivalence is maintained.
5. Warranty
Should any defect in material or workmanship be found within 12 months of the date of purchase
AB Aqua Medic GmbH undertakes to repair or, at our option, replace the defective part free of
charge – always provided the product has been installed correctly, is used for the purpose that was
intended by us, is used in accordance with the operating instructions and is returned to us carriage
paid. The warranty term is not applicable on the all consumable products.
Proof of Purchase is required by presentation of an original invoice or receipt indicating the dealer’s
name, the model number and date of purchase, or a Guarantee Card if appropriate. This warranty
may not apply if any model or production number has been altered, deleted or removed,
unauthorised persons or organisations have executed repairs, modifications or alterations, or
damage is caused by accident, misuse or neglect.
We regret we are unable to accept any liability for any consequential loss.
Please note that the product is not defective under the terms of this warranty where the product,
or any of its component parts, was not originally designed and / or manufactured for the market in
which it is used. These statements do not affect your statutory rights as a customer.
If your AB Aqua Medic GmbH product does not appear to be working correctly or appears to be
defective please contact your dealer in the first instance.
Before calling your dealer please ensure you have read and understood the operating instructions.
If you have any questions your dealer cannot answer please contact us.
Our policy is one of continual technical improvement and we reserve the right to modify and adjust
the specification of our products without prior notification.
AB AQUA MEDIC GmbH - Gewerbepark 24 - 49143 Bissendorf/Germany
- Technical changes reserved -
