This is what is known as “crystallisation” of the potassium liquid in the base of the container.
These are clear and melt when placed in hot water.
Extreme cold temperatures sometimes set off this “crystallisation” especially if you have experienced a cold snap.
*Please note this causes no harm to the liquid itself but, it should not occur and we certainly like our customers to have a bottle that does not have this.*
If your PowerFeed product displays “crystallisation” please contact: email@example.com