I'm not sure about the bio wheels, but I have heard that the bacteria starts to die off in a power filter after 30 minutes.* Not sure if this is correct.* If you have power outages quite a bit, might I suggest a sponge filter (or 2) instead?* Since they are completely in the tank, I don't think the bio bugs are affected during a power outtage, and once the power comes back on, the filter runs like it never turned off.* You don't have to prime them.
P.S. Welcome to FishLore! How about introducing yourself in our welcome forum and tell us the sizes and what you got in your tank(s)!
