Pogostemon Helferi on lava rock. Pogostemon Helferi on lava rock. Aquarans in Thailand, near the border with Burma, discovered this plant. It is called 'Downoi' in Thailand (small star) and it is easy to see why (5-10 cm long and wide). Pogostemon Helferi
Medium - plants requiring a little extra care
Medium aquarium plants for aquascaping category.
- Medium-sized plants need at least ½ watt of light per litre to thrive.
- Most plants require CO2 injection or liquid carbon dosing to ensure plants grow with good colour and density.
- ½-1 hours of weekly maintenance is required, depending on the speed of growth and development of the plants.
- Liquid fertiliser is required. Seachem or ADA are recommended.
