Echinodorus cordifolius ‘Marble Queen’, commonly known as the Marble Queen aquatic plant, is a popular choice among aquarists due to its striking appearance and relative ease of care. Here’s a detailed overview of this aquatic plant, covering its origin, light and water conditions, and planting instructions.

Origin

The Marble Queen is a cultivar of Echinodorus cordifolius, which is native to various regions including South America, Central America, and parts of North America. Specifically, it is found in marshes and swamps from Mexico to Paraguay and along the southeastern United States from Texas to Florida1248.

Light Conditions

The Marble Queen thrives in bright, indirect light. While it can tolerate lower light conditions, optimal growth and vibrant coloration are achieved with adequate lighting. A light intensity of around 2-3 watts per gallon is recommended for best results24.

Water Conditions

For optimal growth, the Marble Queen prefers the following water conditions:

• Temperature: 22-28°C (72-82°F)
• pH: 6.0 to 7.5
• Hardness: Soft to moderately hard water (up to 15 dGH) is suitable235.

How to Plant

Planting the Marble Queen involves several straightforward steps:

1. Choose a Suitable Substrate: Use a nutrient-rich substrate that can support root growth. A mixture of aquarium soil and gravel can work well.
2. Prepare the Plant: Carefully remove the plant from its pot, gently rinsing off any old substrate. Trim any damaged roots if necessary.
3. Planting Depth: Dig a small hole in the substrate and place the root system into it, ensuring that the crown (where the roots meet the stem) is just above the substrate surface to prevent rot.
4. Spacing: If planting multiple plants, space them about 6-12 inches apart to allow for growth.
5. Watering: After planting, fill the tank with water slowly to avoid disturbing the substrate. Ensure that the water parameters are within the desired range before introducing the plant.
6. Fertilization: Consider using liquid fertilizers or root tabs to provide essential nutrients as the plant establishes itself2345.

By following these guidelines, you can successfully cultivate Echinodorus cordifolius ‘Marble Queen’ in your aquarium, adding both beauty and ecological benefits to your aquatic environmen