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Hobby Fish retail aquatic store between Milton Keynes, Northampton & Buckingham

Online orders are despatched from multiple sites. Online stocks do not reflect stocks held at our Milton Keynes store. Please call
01908 543210
to confirm instore stocks before travelling.

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Bacteria starter

  • Biological nitrite removal.
  • Detoxifies water with fast start formula using highly active cleansing bacteria and enzymes.
  • 8 complementary bacterial cultures for the breakdown of proteins (heterotropic bacteria), ammonium and nitrite.
  • The first fish can be introduced to the newly established aquarium 24 to 48 hours after application of JBL Denitrol.
JBL Denitrol 10 billion (per 100 ml) of 8 different harmless species of bacteria with synergic effect in a new formula, designed for the specific breakdown of organic impurities (mould, feed residues), ammonia and nitrite in the aquarium water.

Where comes nitrite in aquariums from? Nitrite (NO2) is a strong poison which blocks the transport of oxygen by the blood and leads to internal suffocation. It is formed by bacterial decomposition from ammonium and is further broken down into the non-toxic nitrate NO3. If nitrite levels exceeding 0.1 mg/l are measured, the bacterial break down of nitrogen is seriously damaged, without any doubt. This may be the result of treatment with antibacterial medications.

Measures against excessive nitrite levels in a freshwater aquarium:
    1. Major water change of 1/3 to � the content of the aquarium.
    2. Preparation of the water with JBL Biotopol.
    3. Activate filter with JBL Filterstart.
    4. Add JBL ClearMec plus to the filter. This filter material removes nitrite and nitrate from the water.
    5. Identify cause: quantity of feed, fish stocking level, use of medications etc.
Measures against excessive nitrite levels in a saltwater aquarium:
    1. Change 1/3 water.
    2. Preparation of the water with JBL BioMarol.
    3. Identify cause of nitrite: remove dead fish, clean areas of pollution, check filter etc.
    4. Prime filter biologically with JBL Filterstart.
Ammonium is considered to be the first decomposition stage in the nitrogen cycle. It consists of proteins, which are converted by heterotrophic bacteria to ammonium. In addition, fish excrete a percentage of their bodily weight into the water every day in the form of ammonium. Ammonium is non-toxic, but, with increasing pH-levels, is converted to an ever-greater degree into toxic ammonia. If symptoms of poisoning appear in the pond or aquarium, it is important that the ammonium level is measured using the JBL Ammonium Test Set, in addition to nitrite. The enclosed table shows the resulting ammoniac content based on the pH-level. If ammonia levels of over 0.25 mg/l are measured, the pH-level must immediately be reduced slightly and the ammonium eliminated in the long term using JBL AmmoEX, as well as the bacterial decomposition process activated with JBL Denitrol (pollutant-decomposing bacteria). After the filters have been cleaned or medications have been used, bacteria which break down ammonium and nitrite are reintroduced to the filter using JBL Filterstart.

Our Price: £ 11.79
In Stock© Hobby Fish Tick Image
2-4 days.
Denitrol 100ml

Our Price: £ 23.95
In Stock© Hobby Fish Tick Image
2-4 days.
Denitrol 250ml