plant · Lamiaceae
Downoi
Pogostemon helferi
Wild range: Southeast Asia (Asia)

At a glance: Downoi care
Compiled reference information. Review the care notes and original sources below.
What temperature is listed for Downoi?
The compiled profile lists 22.0–28.0 °C for Downoi (Pogostemon helferi). Check the original sources below for context and differing recommendations.
What tank size is listed for Downoi?
The profile lists a minimum tank volume of 2.6 US gallons (10.0 liters). Volume alone does not establish suitability; consider dimensions, group size and other inhabitants alongside the full care notes.
What pH is listed for Downoi?
The compiled profile lists a pH of 6.0–7.5. Review the cited care sources alongside the other water parameters in this profile.
Natural habitat
Pogostemon helferi thrives in well-lit freshwater environments with nutrient-rich substrates, commonly found in shallow waters and paddy fields in Southeast Asia.
Where they are found
This species is native to freshwater habitats in Thailand, where it grows in submerged conditions, often found in gently flowing water bodies.
Aquarium care
To cultivate Pogostemon helferi in an aquarium, it requires a medium level of light and a nutrient-rich substrate to thrive. Regular CO2 supplementation is beneficial but not mandatory. The plant grows best with gentle water flow to support its delicate structure.
Feeding
Generally, Pogostemon helferi is adaptable in terms of feeding, absorbing nutrients predominantly from the substrate and water column.
Compatibility
Due to its peaceful nature, Pogostemon helferi is suitable for community setups with other calm fish and invertebrates. However, care should be taken with any aggressive species, as they may disrupt the plant's growth.
Breeding
Reproduction occurs through side shoots, which can be easily replanted in the substrate to expand coverage. Trimming encourages more side growth.
Sources
Compiled from multiple independent care sheets — not copied from a single site.