Hi Thanks so much for helping ,I think it might have been the fertilizer because the minnows were doing good before that happened, they were in there about a week before the seeding and were fine. I just don't know what to do from here. Can I get rid of this green stuff or just have to wait it out? I haven't had the water tested yet. but have several spring fed ponds in the area that have fish. We do have a lot of lime in the water in this area so we didn't lime the pond. The wife is wanting to plant some water plants buy the pond and I really don't want her to.is it necessary?