Very strong source of carbonates

If the initial [NO3-] in the aquarium is below 20 ppm

If concentrations of ammonia or nitrite are persistently-measurable with a quality test kit

As the name implies

Sodium tetraborate

MicroBacterStartXLM 500ml vitamina Very strong source of carbonatesMicrBacter Start XLM Professional 15x strength powerful live tank starter nitrifying bioculture, with much fewer temperature and shelf life restrictions than competing products, for rapidly cycling new marine fish and reef aquaria and brackish aquariums, and for recovering from overcrowding or disasters where the bacteria bed has been damaged or when adding new fish. It is also quite useful after re arranging decorations or performing major