Pogostemon helferi 'White Line' is a fascinating aquatic plant known for its distinctive appearance and unique features. It's a variant of the Pogostemon helferi species and stands out with its striking white lines on the leaves. Here’s a detailed overview:

Description

• Appearance: Pogostemon helferi 'White Line' is characterized by its small, elongated leaves with striking white or pale-colored veins. The contrast between the white lines and the green background creates a visually appealing pattern. The plant has a compact and bushy growth habit, making it an attractive addition to aquariums.
• Size: It typically grows to about 5-10 cm (2-4 inches) in height, making it suitable for the foreground or midground of aquariums. Its small size and dense growth make it ideal for creating lush, textured areas.

Habitat

• Native Range: Pogostemon helferi is native to Southeast Asia, particularly Thailand. The 'White Line' variant is a cultivated form known for its unique leaf pattern.
• Natural Habitat: In the wild, Pogostemon helferi grows in slow-moving streams and shallow water areas, where it benefits from shaded conditions and nutrient-rich substrates.

Care and Maintenance in Aquariums

• Tank Size: Due to its compact size, Pogostemon helferi 'White Line' is suitable for tanks of various sizes, including nano aquariums. It can be used in the foreground or midground to create dense, textured carpets or accents.
• Water Parameters: This plant thrives in tropical water conditions with temperatures ranging from 22-28°C (72-82°F) and a pH level between 6.0 and 7.5. It prefers soft to moderately hard water but is adaptable to a range of conditions.
• Substrate: A nutrient-rich substrate is ideal for Pogostemon helferi 'White Line' to support healthy growth and vibrant coloration. Aquasoils or other substrates designed for planted tanks work well.
• Tank Setup: This plant does well in moderate to high lighting conditions. While it can tolerate lower light levels, the white lines on the leaves may be less pronounced. CO2 supplementation is beneficial for promoting lush growth and vibrant colors. Regular dosing with liquid fertilizers will also support its health and appearance.

Growth and Maintenance

• Growth Rate: Pogostemon helferi 'White Line' has a slow to moderate growth rate. It will gradually form a dense cluster of leaves, adding texture and interest to the aquarium.
• Propagation: Propagation is typically done by trimming and replanting the plant’s stems. New shoots will emerge from the base, which can be separated and replanted to spread the plant further across the tank.
• Maintenance: Regular trimming is necessary to maintain the plant’s shape and prevent it from becoming leggy. Removing old or damaged leaves will help keep the plant healthy and prevent algae buildup.