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Brand new to garden ponds
Phyllis and Jim wrote, On 08/06/2008 13:58:
You have good answers. Our main pond is cement. No root penetration! Plants float, grwo wild on the bottom or are in pots. Fish waste provides nutrients. You all seem to be forgetting that a plant gains it's primary source of nutrition by fixing co2 into sugars using energy from the sun. The sugars are used as building blocks to grow, and fuel for other processes. It's roots take up water and molecules such as nitrates, phosphates and metals to help build proteins for specific processes (such as photosynthesis). Luckily for us, fish crap out those kind of goodies continuously. People often make this same mistake about carnivorous plants, completely forgetting that they are green and photosynthesise like any other plant to generate their own food. In their case, insects provide the molecules that don't exist naturally in their soils. -- DavidM www.djmorgan.org.uk |
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