sweeTang21;2771457; said:the CC can go on the bottom, and then a sheet of mash to keep the sand on top can be used, this will prevent the CC from being a detritus trap, which is what makes it a not so great substrate in my point of view. Pods will form and setup camps, wherever fish cant get at them. I take a small plastic cup, with 3/8 inch holes cut in it and place it rim side down, and all them to house in that, they will mass produce out of that.
