Nymphaea lotus

Scientific name: Nymphaea lotus

Family: Nymphaecaceae

Usual maximum size in aquariums: 20 - 50 cm (7.87 - 19.69 inch)

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Recommended pH range for the species: 5.5 - 7.5

Recommended water hardness (dGH): 4 - 12°N (71.43 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature: 22 - 28 °C (71.6 - 82.4°F)

Reproduction of the plant: Bulb shoots

Origin (in the wild): Madagascar

How fast these plants grow: Fast

Recommended substrate: Fine gravel

Demands on lighting: Bright

Ideal placement in a fish tank: Background

Common Names

Tiger Lotus, Egyptian White Water Lily, White Lotus

Origin

Madagascar; naturally found in warm, slow-moving freshwater habitats like lakes, ponds, and rivers.

Difficulty

Easy – suitable for beginners. Tiger Lotus is a hardy plant that tolerates a wide range of conditions, including low-tech tanks without CO₂ injection.

Propagation

This plant reproduces vegetatively through daughter bulbs. When mature, the main bulb produces smaller bulbs that can be separated and replanted. Gently remove them and place in a nutrient-rich substrate, keeping the top of the bulb exposed to avoid rotting.

Planting

Tiger Lotus should be planted in the midground or background depending on tank size. Never bury the bulb completely—leave the crown visible above the substrate. For control, it can also be kept in pots. This prevents it from taking over the aquarium.

Short Description

Nymphaea lotus is one of the most visually striking aquarium plants thanks to its reddish, sometimes green, broad leaves. It grows quickly under good lighting and develops floating leaves if left unchecked. These large leaves offer shade and shelter for fish like Otocinclus and snails.

Despite its lush appearance, it does not require CO₂ or special fertilization, but it thrives best with a nutrient-rich substrate and occasional root tabs. The plant is also suitable for warm outdoor ponds in tropical and subtropical climates.

Maintenance

To keep a bushier appearance and avoid surface leaves, trim the long stems regularly. If allowed to flower, Tiger Lotus may develop a delicate pink bloom above the surface, but this often comes at the cost of its compact form. Regular pruning of taller leaves encourages new growth near the base.

If space is limited or you want to prevent uncontrolled spread, consider keeping the plant in a pot with enriched substrate.

Notes

Lighting affects both size and shape—under high light, it remains compact and vibrant; under lower light, it sends leaves to the surface. It’s also known in some sources as Nymphaea zenkeri.

FAQs

• Can I grow Nymphaea lotus without CO₂ injection?

  Yes, this plant does well in low-tech tanks without CO₂, although growth and color intensity may improve with added CO₂ and fertilizers.

• Why are the leaves of my Tiger Lotus turning green instead of red?

  This can happen due to low lighting or lack of nutrients. Increase light intensity and ensure the substrate is nutrient-rich to restore red coloration.

• How do I prevent my Tiger Lotus from taking over the tank?

  Regularly trim tall stems that reach the surface, and consider planting it in a pot to contain its root system. Removing floating leaves helps maintain a compact shape.

• Can Tiger Lotus flower in an aquarium?

  Yes, if allowed to grow tall, it can produce beautiful pink flowers above the water. However, flowering may reduce compact foliage growth below the surface.

• Is it normal for the plant to look like a dead bulb when purchased?

  Absolutely. Many Tiger Lotus plants are sold as dormant bulbs. Once planted correctly, they typically sprout within a few weeks.

• Tips for long-term care?

  Use a deep, nutrient-rich substrate, avoid burying the bulb, prune regularly, and provide consistent light. Occasional root tabs will keep it healthy for years.