Hello, Hello everyone, I'm a homeowner who's been experimenting with pond building over the last couple of months and I've been doing a fair amount of investigating on what I need to do to make our pond dreams a reality. I've attached a picture of our pond from a week ago. The water level has since been raise by another 9" and we have a fair amount of wood chippings down on either side of the sandy beach. I've got a lot of questions based on my investigations so far. I seem to get a lot of conflicting answers from different people who want to sell us products to help keep our pond fresh. What I'm looking for is some objective suggestions. Any insight or info anyone can share would be greatly appreciated.....thanks!! Q1. Will two 2000 GPH pumps streaming a 6-8 ft high bead of water to the center of either end be enough to aerate the pond and maintain adequate "good bacteria" levels? I've heard people say that the water should be circulated entirely every two hours. This doesn't seem possible with a pond our size. Q2 Will these two pumps be sufficient to control mosquito growth? I have a temporary 1/2 horse sump doing the circulating for us right now and it seems to create a fair amount of dimpling of the surface. So I'm hoping this will work for us. Q3. Is the water safe for the kids to swim in? Q4. Should I look into some kind of support material on the banks to prevent them from caving in over time? My worry is the winter freezing will crumble the walls. Q.5 Should I empty the pond in the fall time (just before the snow) or should I ensure it's completely filled? Q6 How many gold fish is too many? Would you recommend stocking with 10, 20, 40, 80 ... goldfish? I know they can help with keeping the mosquito larvae down. here are some specs to help describe what we have and how we want to use it: I dug it out last month, and have been slowly filling it with water. (man, it took a while to fill!) It's kidney bean shaped. 3 - 3.5' deep 65 fee long, 25' wide at the widest points By my calculations, it's approx 40,000 gallons The banks are fairly steep on the edges (except where the beach is) so I'm hoping it won't cave in. One side has a gradual slope with a sand beach (with a heavy duty tarp below it) There is no rubber liner at this point, instead we have a natural clay lining throughout. This pond doesn't really loose water.. it's been at 3' now for over a weeks since I filled it. will house some small fish, goldfish primarily (but fish are not a real priority). They'll be left in over winter and scooped out the following spring if we find them. Our winters are very cold here in Canada (-40C) in January, so I expect the pond the freeze completely. The Pond will primarily be used by the kids in summer to go wading and to cool off from the hot days. Plus we'd like to plant some perennial vegetation that'll help give it a real natural look. Pond lillies, reeds, etc. I builit a burm around the perimeter of the pond to prevent lawn runoff from the heavy rains.