6
7.
Determine the CO
2
content in the water using a pH controller or a pH test. Raise the bubble
amount per minute daily until a reading of 7.0 – 7.4 (for fresh water aquaria) is reached. It may
take some days until the proper CO
2
level is reached and maintained.
Check the pH value reguarly and adjust the CO
2
bubble amount as required.
The CO
2
gas in the pressure bottle is 99.8% pure carbon dioxide. The remaining 0.2% are nitrogen,
oxygen and other insoluble gases. These impurities are collected in the CO
2
reactor and can decrease
its efficiency. An air hole allows these gases to escape automatically when they reach a preset
concentration. Because of this, gas bubbles will leave the reactor again and again. This is absolutely
normal and necessary.
Raising the carbonate hardness (alcalinity)
Aquarium water, fresh or salt water should have a minimum carbonate hardness of 4 – 6 °KH (1.5 – 2
mmol/l). Below this limit, the pH of the water cannot be stabilized. Biological processes produce
permanently organic acids that reduce the carbonate hardness. Filtration with peat or the use of other
acids (Phosphoric acid or hydrochloric acid). If peat products are used for filtration, the carbonate
hardness of the water should be checked weekly. If the KH drops below 4° in fresh water or 6 ° in salt
water, it should be raised. We recommend the buffer tablets Aqua Medic aqua+ KH.
The optimum CO
2
quantity
The amount of CO
2
that can be dissolved in water depends mainly on the carbonate hardness
(alcalinity) of the water. The higher the carbonate hardness, the higher is the CO
2-
concentration –
at the same pH-value. The toxic level of the CO
2
-concentration is also depending on the carbonate
hardness.
At pH value 7.1 – 7.4 for fresh water and 8.1 – 8.4 for salt water, the balance between free CO
2
and carbonate hardness is reached. In this range, the CO
2
quantity is not dangerous for fish, no
matter what the value of the carbonate hardness is.
4.
Cleaning the pump
Take the filter housing off for cleaning the pump. The filter housing contains a small box with
activated carbon and a sponge. Replace the carbon from time to time and clean the sponge. The
impeller is covered with a cap. When you take this cap off, you can clean the impeller with a small
brush.
5.
Warranty
Should any defect in material or workmanship be found within twelve 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 – 06/2014