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Hornwort (Ceratophyllum) | Home Fish Aquarium Guide

Home Fish Aquarium Guide

Fishkeeping Information and Resources for the Home Aquarium



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Hornwort (Ceratophyllum)

This is THE plant for saving baby fish fry. It has dense collections of leaves. This plant does not grow roots and is typically seen as a floating plant. It can be anchored to the substrate though. It can survive in a wide range of conditions from low to high light levels. It is a very fast grower and can rapidly soak up nutrients in the tank. Many people use this as a plant to help break in a new tank. The down sides to this plant are that it can die off after it has used up available nutrients unless there is a constant supply. When the plant dies it can leave behind a mess of pine needle like droppings from all of its leaves.

Hornwort is a copper sensitive plant and copper in the water will kill it within a day or so.

This is one of those “it will take over your tank” kind of plants. Easy to grow, grows rapidly and is great for absorbing any ammonia or nitrates in the water. It will tolerate temperatures down to 56 degrees Fahrenheit and up to about 82 degrees. An alternate name for this plant is coontail.

The plant is dark green and a good algae competitor. It supposedly exhibits allelopathic behavior. (Releasing a substance to inhibit growth of something else.) In this case it supposedly releases a chemical that inhibits algae growth.

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February 11, 2011 - 9:01 PM