Section 608 of the Federal Clean Air Act requires that all persons who maintain. must be certified as Universal technicians. Should EPA regulations change after a technician becomes certified. or 18 out of 25 correct.
Effect of freeze-drying on the viability of selected probiotic organisms is shown in Table 1. Freeze drying had a deleterious effect on the viability of all probiotic organisms. In general, Bifidobacterium spp. had 7% higher survival than Lactobacillus spp. with the exception of B. longum 1941.
Freeze-Dried Foods. Freeze-dried foods are a great option for your fish. They have many of the same benefits of live food, but are much more convenient and carry no risk of transmitting diseases. You can feed them to your tetras or guppies as a staple food (instead of flake foods), though they do cost a bit more.