chemistry

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today my new plants arrived and they have been placed in the tank ,    new tank 2 weeks old water chemistry baseline was as you would expect  tank is 100 litres in size  ( 1 us gallon = 3.7litres)    Ph = 7.2  Ammonia, NH3  = 0 toxic Ammonia NH4  = 0  nitrite NO2              0 Nitrate NO3  ...