What is the difference between Bacter Crystal and Bacter Energy? You sent me a sample of Bacter Crystal a while ago and I am starting to run low so it will be time to refill soon.
Bacter crystal is a bacterial starter culture. Kind of like the liquid ones you see in pet stores and given with every aquarium. Except that, well, it actually works.
Beacter energy is more designed to keep benefial bacterial growth going strong for the long term.