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Do pennies really keep algae out of birdbath?

Posted by Eric580 (My Page) on
Wed, Aug 15, 12 at 22:44

I put four pennies in my standing water birdbath to prevent algae growth in it. Should I add more or is there another way? Please help

Follow-Up Postings:

RE: Do pennies really keep algae out of birdbath?

I'd be interested to know too. I tip my birdbath and wash it out, haven't tried any other way.

RE: Do pennies really keep algae out of birdbath?

Last year I did some searching and found an old thread on keeping/cleaning a bird bath on another forum.

Apparently new pennies (1982 and later) are mostly zinc, not copper, so they don't work like copper.

One of my bird baths is copper, the others are all plastic or rubber, and the copper bird bath always has minimal algae. It still gets unpleasant from bird droppings, but that's a different issue.

Because of that thread I tried adding a few small copper pipe fittings I got at Home Depot to the plastic and rubber birdbaths. It definitely cut down on the algae. The only problem is that I keep losing fittings when I dump out or flush the birdbaths. A bigger copper pipe would probably be much better and I think I'll put that on my shopping list.

In warm weather I flush out all of the birdbaths every day (lots of bird droppings). In the winter when the hoses are shut down, I use watering cans.


RERE: Do pennies really keep algae out of birdbath?

I forgot to say that I occasionally use a scrub brush when the algae growth gets annoying.


RE: Do pennies really keep algae out of birdbath?

A toilet-bowl brush plus Soft Scrub cleaner with bleach is also effective.

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