Hey guys, in my region (europe) i reaaallllly cant find any crab meal at all. Is there anything I can replace it with? I find Sepia Shell but it would be difficult to get. ? Same goes for Oyster Shell Flour. I find Horn Shavings .. ( Made out of horse's hoof) .. Will they help? Or stuff like chicken manure/horse manure maybe? Damn its really difficult Thanks guys!