sera guide - Healthy pond fish

40 Cause: page 22 Prevention/Recommendation: Check the nitrite level with the sera NO2-Test. In case of dangerously elevated levels (above 0.5 mg/l) you should immediately react with a large partial water change and by adding sera pond toxivec. A slight salinity increase with sera ectopur reduces the toxicity of nitrite towards the fish to a certain extent. In the long term you can effectively prevent the accumulation of toxic nitrite by using a filter with a – considering the water amount – sufficient settling area for bacteria that break down pollutants (especially well suited: the bioactive filter system consisting of sera siporax pond with sera pond filter biostart; furthermore: regular application of sera pond bio nitrivec for maintaining a healthy bacterial flora in the pond water). Even long lasting low level nitrite pollution may cause permanent damages. 8 Preventing and remedying maintenance mistakes and intoxications Filter media activation Filter medium with largest possible filter performance Biological water purification sera siporax pond sera pond filter biostart sera pond bio nitrivec NH4/NH3 Ammonium/ ammonia NO2 Nitrite NO3 Nitrate Biological water purification Clean, crystal clear pond water Acute nitrite intoxication