Coccolithic chalk / There are different types of chalk in Europe. The most effective for ponds is Nautex coccolithic chalk. It will play several roles:
PH regulation
Regulation of dissolved oxygen content.
Addition of microorganisms to water for the development of bacteria
By improving the oxygen content, it allows the development of aerobic bacteria that can easily develop and decompose the muddy layers. This product at the right dosage is harmless to your fish. If you want to significantly reduce siltation, we recommend spreadingNAUTEX at 150G/ M² , then finish withBACTOVASE , ultra-powerful bacteria which will take care of digesting the majority of the organic load of the mud.
