New and Unread Tree-Mails
Views: 346, Replies: 6 » Jump to the end |
Name: anglfsh East Texas  anglfsh6 Mar 22, 2015 6:30 PM CST |
| Will copper pennies harm the fish in a small fountain or aquarium? I think the fountain is 8 gallons. |
Name: Dave Whitinger Jacksonville, Texas (Zone 8b)              |
| Copper will not harm fish. |
Name: Sandy B. Ford River, Michigan UP (Zone 4b) (Zone 4b-maybe 5a)          Weedwhacker Mar 22, 2015 7:26 PM CST |
| and I don't think there's all that much copper in "copper pennies" anymore -- is there? from livescience.com: "In 1962, the cent's tin content, which was quite small, was removed. That made the metal composition of the cent 95 percent copper and 5 percent zinc. The alloy remained 95 percent copper and 5 percent zinc until 1982, when the composition was changed to 97.5 percent zinc and 2.5 percent copper (copper-plated zinc). Cents of both compositions appeared in that year." Apparently we need to change our thinking to "zinc pennies" - John Powell / Cubits.org - A Universe of Communities / Share your recipes: Favorite Recipes A-Z cubit C/F temp conversion / NGA Member Map |
Name: Bob Vernon N.J. (Zone 6a)           NJBob Mar 22, 2015 8:51 PM CST |
| I have read in fish tank forums that they are used to kill snails and inverts. They can also kill scaleless fish. |
Name: Jeanne Lansing, Iowa (Zone 5a)  gardenglassgems Mar 22, 2015 9:32 PM CST |
| I have read the the true older copper pennies are good to use in bird baths and fountains to help control algae. Has anyone else heard this? Yard decor, repurposing, and flowers, |
Name: Elaine South Sarasota, Florida (Zone 9b) The one constant in life is change          dyzzypyxxy Mar 23, 2015 10:07 AM CST |
| They put copper in anti-fouling paint for boats, and that does inhibit marine plant growth. In 'olden times' they used to sheath the bottoms of sailing ships in sheets of copper for that purpose and to protect wooden hulls from barnacles and ship worms. Copper is also a component in algaecide used in swimming pools to keep algae growth down. Here's an article on it: http://copperantifouling.com/c... Scroll down to point #5 on Environmental impacts if you don't have the patience to read the whole thing. Elaine "Success is stumbling from failure to failure with no loss of enthusiasm." –Winston Churchill |
Name: Suzanne/Sue Sebastopol, CA (Zone 9a) Sunset Zone 15           |
| Here's an older thread from 2013 where this same question was asked here: The thread "Pennies in the birdbath..." in Ask a Question forum |
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