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Connection to an existing aquarium
If a Nitratereductor is connected to an existing aquarium with a rather high nitrate level, the inflow
of aquarium water should not immediately be started. The bacterial growth is enhanced by the
addition of 1 tablet of Denimar per day. If after 8 - 14 days, the nitrite has dissapeared from the
reductor - a residual concentration of nitrate is harmless - the water flow can be switched on.
Connection to a new aquarium
If connected to a new aquarium, the bacteria do not have to be fed within the first 4 weeks, as the
nitrate forming bacteria Nitrosomonas and Nitrobacter need this time to develop and to oxydize the
whole amount of ammonia and nitrite into nitrate.
Feeding
The feeding has to be adjusted according to the nitrate loading of the aquarium. It can be
controlled with a redox probe (see options). In a normal loaded tank, one tablet per day is
sufficient. It is possible to feed several tablets (up to 3 pcs.) at a time. The filter then needs no
feeding for several days. After some time, a slimy bacterial biomass is formed in the
Nitratereductor. This a normal process. A high bacteria population ensures a high removal rate of
nitrate.
8. Feeding with Deniballs
The white AB Aqua Medic Deniballs are made of a biodegradable plastic material. This plastic
material is also produced biologically - the raw material is produced by bacteria. This new plastic
material is completely biodegradable. It can be used by denitrifying bacteria in the Nitratereductor
to remove nitrate. The Deniballs supply the surface area and the food for the bacteria at the same
time. This means that a Nitratereductor filled with Deniballs has not to be fed for a longer period -
up to one year. The Deniballs need - especially in a seawater tank - a longer period to reach their
full capacity. During this time 1 tablet of Denimar per day has to be added.
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