It's all the more info I could dig up, and I have been digging! I will have to take a picture of the overflow pipe this pond has, but I don't think these clams could cause an issue with it. I think I will add the clams. Either they will not take hold because of low DO issues, they will flourish a little too much and make a mess, or they will help grow some huge RES. Won't know til I try it...
