Cryptocoryne blassi
Scientific name: Cryptocoryne blassi
Family: Araceae
Usual maximum size in aquariums: 35 - 45 cm (13.78 - 17.72 inch)
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Recommended pH range for the species: 6.6 - 7.5
Recommended water hardness (dGH): 4 - 18°N (71.43 - 321.43ppm)
0°C 32°F30°C 86°F
Recommended temperature: 22 - 28 °C (71.6 - 82.4°F)
Reproduction of the plant: Runners
Origin (in the wild): East Asia
How fast these plants grow: Normal
Recommended substrate: Fine gravel
Demands on lighting: Medium
Ideal placement in a fish tank: Middle
Common Names
Giant Crypt
Origin
Cryptocoryne blassi originates from Southeast Asia, particularly in Thailand, Borneo, and Malaysia. In its natural habitat, it grows along slow-moving streams and in marshy areas, thriving in warm, tropical climates.
Quick Overview
- Ideal For: Aquariums, paludariums
- Difficulty Level: Easy
- Lighting: Medium
Growing Conditions
Cryptocoryne blassi is a versatile plant that can grow both submerged in aquariums and emersed in humid environments like paludariums. This adaptability allows it to thrive in a variety of setups, including tanks with moderate lighting. When grown fully submerged, its height reaches 35 - 45 cm (13.78 - 17.72 inches), making it an ideal choice for the midground or background in larger aquariums. A substrate of fine gravel supports its root structure, and stable water parameters within a pH range of 6.6 to 7.5 promote healthy growth.
Planting Area
With its taller growth, Cryptocoryne blassi is best suited for the midground to background of an aquarium. Its unique leaf shape and color contrast nicely with other plants, providing depth and interest in the aquascape. In smaller tanks, it can also serve as a focal point in the midground, especially when planted in small clusters.
Propagation
Propagation of Cryptocoryne blassi is achieved through runners, which are horizontal stems extending from the main plant. These runners develop small plantlets that eventually grow roots and can be separated from the mother plant. Once separated, these young plants can be replanted elsewhere in the tank, encouraging a fuller appearance. Regular trimming of runners helps control the spread and maintain a clean look in the aquarium.
Difficulty
Cryptocoryne blassi is considered easy to care for, making it suitable for both beginner and experienced aquarists. It is highly adaptable to different water conditions and tolerates a wide range of hardness, thriving even in hard water environments. However, to prevent “Crypt melt,” avoid sudden changes in water conditions, as this plant prefers a stable setup.
Short Description
Cryptocoryne blassi, commonly known as the Giant Crypt, is a striking aquatic plant with large, textured leaves that may appear puckered or smooth depending on the variety. The leaves display an olive-green color on top and a rich red underside, adding contrast and visual interest to aquascapes. Known for its resilience, this plant can withstand a range of water conditions and is often found growing on limestone in the wild. Its easy propagation and minimal care requirements make it an excellent choice for any aquascape.