Stay away from Zebra mussels. They are nasty things. They are sharp and cut, multiply out of control, plug up any type of pipe, and are an environmental and ecological hazard. Gordon Williams ----- Original Message -----=20 From: "M.L." To: "Microcontroller discussion list - Public." Sent: Monday, January 17, 2011 9:35 AM Subject: Re: [EE] Muck removal / centrifuge ideas > On Sun, Jan 16, 2011 at 10:30 AM, Oli Glaser wrote: > > On 16/01/2011 13:57, Olin Lathrop wrote: > >> IVP wrote: > >>> I have a large outdoor fish pond (and a typo I just did, a fish > >>> pong, which it does if you stir it up) that gets a lot of sun, so > >>> made an algae killer with a 10W UV-C germicidal lamp > >> I don't have fish and don't know all the details of their care and feeding. > >> My naive knee jerk reaction is to get something else to live in the fish > >> tank that eats algae. Fresh water clams do that, I think. If I understand > >> it right (quite possibly I don't), then clams sit on the bottom of the pond > >> and are self-mainting self-replicating water filters. They spend their time > >> pumping water thru themselves and eating the chunky parts they filter out. > >> > >> There must be other critters that would love to feed on your algae too= .. > >> > > > > I don't know much about keeping fish either, but this sounds like a > > pretty good idea - nature usually has pretty good solutions to many > > things (often far better than we can come up with) as the recent Gulf > > oil spill/methane eating bacteria is (probably) a good example of. > > > > > > Zebra mussels cleared out the Great Lakes. You don't even have to go > to Asia to get them. > "Each quagga and zebra mussel filters about 1 US quart (0.95 l) of > water a day when confined to small tanks.[22]" (EN-US Wikipedia) > > -- > Martin K. > > --=20 > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .