Easy-drain wading pool / duck pond.

FussyHen

In the Brooder
Feb 17, 2015
26
2
47
Easy-Drain Duck Pool

Those rigid plastic wading pools for kids make handy duck ponds, but they take some time to empty with a bucket, and if you try to lift them to dump the last of the water out, they tend to crack. I finally figured out a way to install a simple drain using the standpipe idea sometimes used for ponds. Not including the pool, the total cost came to $15.

1 each Black plastic ABS DWV ADAPTER 1.5” (about $1.50)
Like this: http://www.homedepot.com/p/Mueller-...-DWV-Hub-x-MIPT-Male-Adapter-02927H/205002041

(2 each) Black rubber bath shoe gaskets, #4 (about $1.50 each)
Like this: http://hardwaredistributors.com/gasket-bath-shoe-4.html?gclid=CICt5Y2tncYCFQVbfgodkxsDNQ

(1 each) metal Kitchen Sink Strainer Nut (mine came w/o the thin washers) (about $2)
Like this: http://www.homedepot.com/p/DANCO-4-3-8-in-Kitchen-Sink-Strainer-Nut-and-Washer-81080/203851378 (The thin washers that come with them aren't heavy enough for pool purposes.)

(1 each) piece of black 2” diameter ABS plastic pipe, cut about 4” longer than the height of the wading pool.

Make sure everything fits together before you leave the parking lot. You’ll have to stretch the gaskets a bit.

The hardest part is cutting the hole without cracking the plastic. Do it carefully. Next time, I’ll cut a smaller hole, then melt it to size with a pencil-type soldering iron, and trim any melted build-up.

The tallest part of the adapter (the end that holds the pipe) goes inside the pool, the shorter end goes through to the outside bottom. Force a gasket onto the threads of the adapter, push the shorter end through the hole from the inside, put the second gasket on (one gasket goes on each side of the plastic pool bottom). The screw the metal ring nut on.

If the bottom of the pool has an embossed pattern on it (it probably does), you’ll have to work some plumber’s putty under both gaskets, or you won’t get a tight seal and it will leak. Don’t use that thin white stuff, get the gray, clay-like stuff, usually on a roll, about $3.

Set the pool in place, stick the pipe into the hole (which acts as the plug), and fill it up. To drain the pool, just pull up the pipe. The duck muck will have to be hosed out, but nothing's perfect.

If you don't want to flood the surface of that part of your yard, dig a hole about the same diameter and a little deeper as the pool and fill it with larger chunks of bark. I used my never-ending supply of 3" fir cones, and filled and leveled the hole (walked on it and kicked it level), then set the pool on top and filled it.
 
I've got a correction on the instructions. I went outside and all of the water had leaked out of the pool.

Apparently, the two gaskets couldn't seal the uneven, embossed pattern on the bottom of the pool.

So removed the gaskets and replaced them with the clay-like plumber's putty. I took a strip of it off the roll, folded it in half lengthwise, and pressed it against the adapter (where the top gasket had been), inserted the threaded part through the hole in the pool, then took another piece of putty, folded it lengthwise, and pressed it against the gap where the threads and the bottom of the pool meet, then screwed the metal nut on, and tightened it against the putty. Don't go crazy tightening it -- firm is good, cranked down is overkill.

Put the pool back in place, inserted the pipe, filled it with water AGAIN, and it's still full, just minus what the ducks splashed out. They like it much better than their concrete mixing tub.
 
There doesn't seem to be a way to edit my original post here. The pool has been in used for a while now, and they love it. But I did learn a couple of things, and made a few changes in the instructions to send them to a friend in SoCal, so maybe it would make more sense if I just put the revision here.

UPDATE on the HOW-TO:

Duck Pond Drain

(1 each) Black plastic ABS DWV ADAPTER 1.5” …. $1.49
Like this: http://www.homedepot.com/p/Mueller-...-DWV-Hub-x-MIPT-Male-Adapter-02927H/205002041

(1 each) metal Kitchen Sink Strainer Nut..... about $4 (don’t need the washers-- too thin; I got mine as one piece)
Like this: http://www.homedepot.com/p/DANCO-4-3-8-in-Kitchen-Sink-Strainer-Nut-and-Washer-81080/203851378

(1 each) Black rubber bath shoe gasket, #4 About $2.
Like this: http://hardwaredistributors.com/gasket-bath-shoe-4.html?gclid=CICt5Y2tncYCFQVbfgodkxsDNQ

1 small roll of gray, claylike, non-hardening plumber’s putty. About $3.
Like this: http://www.acehardware.com/product/index.jsp?productId=28973496

(1 each) piece of black 2” diameter ABS plastic pipe, cut about 4” longer than the height of the wading pool. You can make it higher if you can’t bend over easily, but the ducks seem more suspicious of tall ones. OTOH, if they want to swim, ADAPT, GUYS! (p.s. Some hardware stores will cut it to the length you want, but it’s easy enough to cut with a hacksaw.)

MAKE SURE the metal nut fits correctly on the DWV adapter, and that your drain pipe fits into the adapter before you leave the hardware store.

Consider the placement of the pipe. I did it as near the edge as it could, for a few reasons. 1) 5 ducks in a small pool don’t need something sticking out of the middle (they’re not as organized as merry-go-round horses); 2) the center has more flex than the edge, probably not good; 3) it’s easier to work on the edge; and 4) reaching across the pool while I’m sleepy and still in my pajamas just seems to be begging for trouble.

The hardest part is cutting the hole without cracking the plastic. Do it carefully. Next time, I’ll cut a smaller hole, then melt it to size with a pencil-type soldering iron, and trim any melted build-up. But if you happen to have a set of those clever hole saws (like this: http://www.homedepot.com/p/Milwaukee-Shockwave-Thin-Wall-Hole-Saw-Set-3-Piece-49-22-4800/204994424 ) that fit the DWV Adapter, it would probably be easier.

TIP: if you crack the pool a bit while putting the hole in, the putty seems to work quite well to seal it. We won’t go into how I know this. Work it in good.

The tallest part of the adapter (the end that holds the pipe) goes inside the pool, the shorter end goes through the hole to the outside. It may or may not be easier to put the pipe in place as something to hold onto as you work, see what’s best for you.

If the bottom of the pool has an embossed pattern on it (kids’ pools usually do), you can’t use hard rubber gaskets, so form the plumber’s putty into 2 rolls about ¼” thick (stack several pieces together – it’s too thin as it comes off the roll) and slightly longer than the diameter of the DWV Adapter where it will sit against the bottom of the pool, one roll for each side. Trim length to fit like a snug-fitting doughnut, and press gently into place onto the adapter where the top of the adapter sets against the inside of the pool. Underneath, press the second roll of clay putty around the adapter and against the bottom of the pool. Force the gasket over the end of the adapter and press it against the putty. Now, screw the metal nut onto the bottom of the adapter and up against the gasket – you want it pretty snug, but NOT so tight that you squeeze the putty so thin that movement will break the seal.

Set the pool in place, stick the pipe into the hole, and fill it up.

Note: Since the drain is installed with the soft putty (it never hardens), you do have to take some care not to flex the drain area too much. When moving the pool, pick it up by the side away from the drain, and don’t let it bump along the ground. And be gentle when putting the piece of pipe in or out, use a twisting motion, not force. If the pool starts to leak, check the putty, esp on the top; the putty may have lifted a bit, and all you’ll need to do is press it down again with your finger.

Oh. Yesterday, I moved the pool so the drain was beside a young tree that I wanted to water. My neighbor was watching over the fence. He said, "Why don't you cement the pipe in place?" *sigh* Ladies, if your guy is doing this for you, make sure he understands the basic concept, and doesn't cement the pipe. Also, don't let him crank down the metal nut under the drain like guys always want to do. If the pool starts leaking, check the gray putty part -- if it looks like tissue paper, there's the problem. *rolly eyes*
 
If I could have, I would have.

The original owner of my computer was Fred Flintstone, it's low on memory, and my OS is Windows 2000. I don't do photos,
videos or .pdf files.

Sorry.
 

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