Sera Test Kit - NO3 - Nitrate (F/M) (04510) Makes it easy to monitor the nitrate level in fresh and marine water Nitrate (NO3) is an indicator for severe organic pollution. The source of this organic pollution should be eliminated, a partial water change...

Sera Test Kit - NO2 - Nitrite (F/M) (04410) Makes it easy to monitor the nitrite level in fresh and marine water Nitrite (NO2) is among the most toxic substances for fish in aquariums. It can enrich in the water in case of insufficient biological...

Sera Test Kit - CO2 - Carbon Dioxide (F) (04320) Permanent CO2 monitoring CO2 is among the most important nutrients for aquatic plants. Deficiencies can therefore have severe consequences. The sera CO2 long-term indicator was developed for...

Sera Test Kit - pH (F/M) (04310) Makes it easy to monitor the pH value in fresh and marine water and ponds. For approx. 100 measurements In case of too low pH values we recommend sera KH/pH-plus (in freshwater aquariums) or sera pond bio balance (in...

Sera Test Kit - KH - Carbonate Hardness (F/M) (04210) Makes it easy to monitor the carbonate hardness in fresh and salt water For approx. 390°dKH. In case of too low KH values we recommend sera KH/pH-plus (in freshwater) or sera pond bio balance (in...

Sera Test Kit - GH - General Hardness (F) (04110) Makes it easy to monitor the total hardness For approx. 420°dGH. In case of too low GH values we recommend sera mineral salt. High total hardness levels can be lowered by mixing in R/O water. For...

Sera Quick Test (50 Strips) - pH-kH-gH-CI2-NO3-NO2 (04960) Quick and easy monitoring Routine monitoring or safety check: The sera Quick Test provides the optimal possibility to check the most important water parameters (pH value, carbonate hardness,...

Sera Aqua Test Box Marine (04004) Water testing for experienced marine aquarists Experienced marine aquarists check their aquarium water regularly. This allows taking care of problems before they become dangerous for the sensitive animals. The sera...

Sera Aqua Test Box Koi/Pond (07715) Water testing for experienced pond keepers Experienced pond keepers check their pond water regularly. This allows taking measures, for instance against algae, quickly and easily, without the need to use chemicals. The...

Sera Aqua Test Box Fresh (04002) Water testing for experienced aquarists Experienced aquarists check their aquarium water regularly. This allows taking measures, for instance against algae, quickly and easily, without the need to use chemicals. The sera...

Sera Aqua Test Set Fresh (04000) Know your water Only knowing your water parameters allows reacting in time and counteract irregularities so animals and plants are being protected. The sera aqua-test set allows monitoring the parameters important for...

Sera Test Kit - PO4 - Phosphate (F/M) (04930) Makes it easy to monitor the phosphate level in fresh and marine water Both fish waste and feeding are possible causes for phosphate introduction into the water. A part is taken up as a nutrient by plants, an...

Sera Test Kit - Ca - Calcium (M) (04920) This test monitors the calcium level easily and precisely in steps of 20 mg/l (ppm) For approx. 7.500 mg (ppm) calcium. Add sera marin COMPONENT 1 Ca in case of too low Ca levels...

Sera Test Kit - O2 - Oxygen (F) (04914) Makes it easy to monitor the oxygen level in freshwater Quick breathing at the water surface is an unmistakable sign for an oxygen deficiency. Unfortunately, it may then already be too late for acting appropriately...

Sera Test Kit - NH3/NH4 - Ammonium/Ammonia (F/M) (04910) Makes it easy to monitor the ammonium/ammonia level in fresh and marine water Ammonium and ammonia mainly arise from fish waste. They are converted into each other depending on the pH value. While...

Sera Test Kit - Cl - Chlorine (F/M) (04810) Makes it easy to monitor the chlorine level in fresh and marine water Chlorine is immediately removed by sera toxivec or sera pond toxivec. sera aquatan or sera KOI PROTECT make the water fish friendly...

Sera Test Kit - Cu - Copper (F/M) (04710) Makes it easy to monitor the copper level in fresh and marine water Copper (Cu) is very toxic especially for invertebrates such as shrimps and crustaceans, but fish also react very sensitively to elevated copper...

Sera Test Kit - Fe - Iron (F/M) (04610) Makes it easy to monitor the iron level in fresh and marine water Iron (Fe) is an important component of plant nutrition. In case the plants have fading leaves this may be due to lacking iron. The sera Fe-Test...