There are two types of bubbles that typically show up when first using our enzymes: 1) big, soapy bubbles, and 2) tiny micro bubbles.
First, the soapy bubbles appear because there is a surfactant in our enzyme formula to help cut through grease and other non-living organics. This surfactant is similar to that of a dish soap, and the bubbles you see at first are likely from that surfactant being introduced for the first time. They go away pretty quickly, and are harmless. Remember, our enzyme products meet the drinking water safety standard (NSF/ANSI 60).
The other type of bubbles are tiny micro bubbles. These are the result of the enzymes breaking down and digesting carbon bonds that hold organic waste together. This carbon, when digested, off-gasses as carbon dioxide (CO2), and in high concentrations you can actually see clusters of micro bubbles. It looks like this: