My channel on Yandex Zen: https://zen.yandex.ru/id/622385280b33...
AQUAYER - pH / KH minus product. We check and test it in hard water.
Three days later, I added another 4 ml of AQUAYER. An hour after adding it, I measured the KH in the aquarium, which dropped another 2 degrees, reaching 6 degrees. I'll stick with this dosage for now.
#AQUAYER
#PH_KH_minus
#carbonate_hardness_of_water