Thanks for the info -- I think we might try to put one in this spring.Yeah D'artagnans train is cool. I have to drain the kiddie pools by every 4-5days max. I have drained the concrete one every 2-4 weeks.Although my friends that have similar sized ones may go up 2-3 months.(I just like it nice looking is why) I have a gradual slope that starts at 1ft and goes 21/2 deep at the other end. A 4inch drain pipe at the bottom right corner is where it drains under ground outside the fence. i just unscrew the end cap and it drains in 20 minutes. I have a well pump right outside the fence that fills it about that fast. I kinda wish I would have also put in an overflow pipe so when it rains really hard I wouldnt have to drain it a little before hand. But besides that I love it. We just plum forgot to add the overflow in our building excitement. All I have to do is hose the muck down the hole.Thats why that 4 in pipe is awesome. It took one full load in a single concrete truck. I figure at the bottom it is at least 5in deep and about 3 on the sides. And 2-3 in on the exposed rollover.Three of us did the work. We rented a bobcat. My friend Joey could drive it real good. Then he let me try.Let me just say its harder than he made it look.probably spent about 1000 on the pond total.
