I bought this bran about a year ago:

https://www.amazon.com/gp/product/B000UPQGAI/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

It lasted about a year and recently I decided to start making my own bran with used coffee grounds and this:

https://www.amazon.com/gp/product/B000TM97NA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Initially I started out draining the liquid but have since moved on to just use one bucket and putting a few inches of dried material at the bottom to absorb the juices. That's been working really well for ground up shells and bones since the bokashi liquid is acidic and dissolves the calcium.