Scientific Name: Rotala rotundifolia
Common Name: Rotala Rotundifolia, Roundleaf Toothcup
Origin: Southeast Asia
Growth Rate: Fast
Difficulty Level: Easy to Moderate
Temperature: 22–30°C
pH: 5.5–7.5
GH: 2–12 dGH
KH: 0–8 dKH
Moderate to high lighting is recommended.
Higher light intensity promotes compact growth and attractive pink to reddish coloration.
Under lower light, the plant remains predominantly green and develops longer internodes.
CO₂ supplementation is beneficial but not essential.
Promotes faster growth, denser foliage, and enhanced coloration.
The plant can thrive in low-tech aquariums, making it suitable for beginners.
Requires regular supplementation of macro and micronutrients.
Adequate nitrate, phosphate, potassium, and trace elements support vigorous growth.
Iron supplementation helps intensify pink and reddish tones in new growth.
Nutrient-rich conditions encourage dense and healthy stem development.
Best suited for the midground to background.
Commonly used to create dense bushes and colorful background sections.
Ideal for adding height, texture, and movement to aquascapes.
Easily propagated through stem cuttings.
Cut healthy tops and replant them into the substrate.
Remaining stems produce multiple side shoots, creating fuller growth.
Regular trimming encourages bushier growth and prevents excessive shading.
Plant stems in groups for a natural and attractive appearance.
Stable nutrient and CO₂ levels help maintain compact growth and vibrant coloration.
Good water circulation supports healthy development.
Rotala rotundifolia is one of the most popular and versatile stem plants in the aquarium hobby. Its adaptability, rapid growth, and ability to develop beautiful pink to reddish hues under favorable conditions make it a favorite among both beginners and experienced aquascapers. With proper lighting, balanced fertilization, and regular trimming, it forms lush, colorful bushes that add depth, contrast, and natural beauty to Nature, Dutch, and contemporary planted aquariums.
