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Thank you for pointing this out, Bob. I get a LOT of questions about our bubbler and soon I will be adding even more information and photos to this link. I do not have photos of the TGP bubbler, and have contacted Jim Rathert on this. If anyone does, please let me know, too. As Bob states, the water is piped through the rock and bubbles or pours over it, but does not recirculate. It just flows into gravel at the base and then outward into moisture loving vegetation. For a park setting, a pond with a bubbler such as ours would need maintenance weekly or biweekly, specifically cleaning the filter and adding Microbe-Lift P/L to control algae. In the interest of water conservation, the TGP setup is probably not the best. There are other options for people to check out by using a search engine and putting in: "pondless waterfalls". These do recirculate and have a reservoir for the water that is concealed under rock. They can also be put on a timer and run only during the day. They do require electricity for the pump and timer, as well as a water source for refilling. These are really a fancier version of the Roth model listed below. One might also search: "bird creek" or "bird basin" and come up with other ideas. There are many good bubbler or bird creek examples out there. If MOBIRDERS would like to contribute information on their setup and photos, please let me know. There is definitely a growing interest in adding water features that attract birds to our yards and small parks and I would like to coordinate these examples for Patrick to add to the MOBIRDS site. Margy Terpstra Kirkwood, St. Louis Co, MO [log in to unmask] ----- Original Message ----- From: "Robert Fisher" <[log in to unmask]> To: <[log in to unmask]> Sent: Saturday, May 31, 2008 6:58 AM Subject: Re: Photos of TGP Bubbler > There is quite a bit of descriptive discussion about bubblers (including a > description of the TGP bubbler and illustrative diagrams of three others) > on the ASM web site at > http://www.mobirds.org/AttractBirds/AttractingBirds.asp. > > For a photo and diagram of the Terpstra bubbler, click on > http://www.mobirds.org/AttractBirds/picdiagramterpbubble.asp > > For a diagram of the Roth model, click on > http://www.mobirds.org/AttractBirds/RothBubbler.jpg > > For a diagram of the Korotev model, click on > http://epsc.wustl.edu/~rlk/wgnss/fountain.html > > I have a photo of the TGP bubbler somewhere in my computer, but I don't > remember the file name and cannot find it. All that you see is a brownish > boulder with a flat but somewhat concave surface. Evidently, water from a > city water pipe goes directly to the boulder and pours onto the surface, > puddling in the concave area and spilling out over the sides. > > > Bob Fisher > Independence, Missouri > [log in to unmask] > ------------------------------------------------------------ > The Audubon Society of Missouri's Wild Bird Discussion Forum > ASM Website: http://mobirds.org/ ------------------------------------------------------------ The Audubon Society of Missouri's Wild Bird Discussion Forum ASM Website: http://mobirds.org/