Hi, I have a relatively new garden pond that I am hoping will attract wildlife. It is about 12 months old. I have 2 problems. the first is the pesky problem of blanket weed which is choking everything and when I try to remove it manually it pulls out pond plants that are trying to establish . Any good tips on it's removal that will not affect wild life? The second is that I do not seem to be able to keep a healthy stock of live food that will multiply to feed growing spawn. Is the daphnia I am buying from pet-shops and pond shops treated with something that will shorten it's life? If so is there anywhere I can buy "good" stuff that is likely to stay and reproduce. Also would it be worth my while trying to get some blood worms?