DOPHIN PSB 200ml # 15

Decomposes organic substances, nitrate, nitrite and poisonous hydrogen sulphide in water and gravel. Contains polyclonal euryhalinous and eurythermic photosynthetic bacteria; suitable to the use in freshwater and saltwater aquariums. Contains more than 100 million active photosynthetic bacteria per milliliter.

100L of water use 10ML of medicine.