E.5.2 | Protocols and Tables (Grow Out) : General Parameters

Ammonia

Ammonia in water system reduces the excretion ammonia in the rotifer. Ammonia exists in marine systems in an “ionized” and “un-ionized” or “free” form. Both forms of ammonia are toxic, but un-ionized ammonia (NH3) is about 100 times more toxic that ionized ammonia (NH4). Unionized ammonia starts to become toxic to fish above 0.05mg/l; Ammonium starts to become toxic to fish above 5.0 mg/l

The percent of ammonia in the form of un-ionized ammonia is determined by pH and Temperature (see table below)

Table E.9: Un-ionized Ammonia as a Percent of Total Ammonia

Table-E.9


  • Any level of total ammonia above 5.0mg/lliter is toxic because Ionized ammonia is toxic at this level
  • Given the pH and temperature range for optimal B. plicatilis culture growth, total ammonia needs to be kept below 1.0mg/liter or be chemically neutralized
  • Given the pH and temperature range for optimal B. rotundiformis culture growth, total ammonia needs to be kept below 0.5mg/liter or be chemically neutralized

Neutralizing Ammonia – ClorAmX

Cleaning

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Filter floss

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