As mentioned, regeneration is different than replenishment. But in practice it's super simple. I have a 5L container of bleach I use. It does about 44-48 rolls in the SSK4. I save the used bleach into a different container (the SSK makes this easy). When the used container of bleach is full, I use Kodak's bleach regenerator to regenerate it. Basically add the 100ml or whatever is needed, shake it up, and then pour it back into the original bleach container. Then start all over again, and do another 44-48 rolls of film.