Well, I dont have any PS in there now but am thinking that I would like to add them and have yet to introduce any BG into the pond. I did have some sort of spawn last year but of what I'm not entirely sure. I have been wondering whether or not there is currently enough in there for them to eat, and especially unsure where the CC are concerned. I put an additional 20#'s of FHM in last week just to give them a boost, coming off of winter. I have no idea about how the crayfish may be doing since I put them in last summer. Although the pond is so clear currently I could probably throw a mask and some fins on and find out first hand.