Get a bowl of tank water, cut the shroom close to the base, sort of dry it a little on a paper towel, put it between your fingers of one hand and spread it out flat. Then carefully cut through the center , then do the same thing with each half. It will be a little slimy so try to dry your hands and the shroom. Then drop each piece in the bowl untill you are ready to put them in the lid. It's really quite easy just seems a little bit intimidating at first. I also did colt coral at the same time I did the shrooms
. Good luck.