Bacteria Powder Plus (BPP) is an additive specialized for Bacter Sand. But can be used with any other soils/substrate.
When using this to setup a new tank, it will greatly increase how fast it takes to cycle the tank and make it more mature.
Please add it to the tank before adding substrate.
Sprinkle 10g of BPP between tank bare bottom and soil when setting the tank.
When the breeding water is not in good condition, add it directly into the water.
Lastly this is a great product to help cycle tanks with much lower pH