Does Rotala Rotundifolia need CO2?

Rotala Rotundifolia grows without CO2, but slower and less dense. Liquid carbon or injection makes the difference between a thin patch and a full carpet.

What light does Rotala Rotundifolia need?

Rotala Rotundifolia is a medium-light plant. Most modern aquarium LEDs cover this. Anything sold as planted-tank-ready works. The stock hood on a basic shop tank usually does not.

Is Rotala Rotundifolia safe for shrimp?

Yes. Rotala Rotundifolia is safe in shrimp tanks. The usual quarantine still applies: any plant from a commercial nursery should be soaked and rinsed first to flush copper and pesticide residue.

Image: Wikimedia Commons — attribution available on this site.

Plant appearance can vary with lighting, nutrients, CO₂, and whether it is grown submerged or emersed.

easymedium lightCO2 helpfulfast growthstem

Rotala Rotundifolia

Rotala rotundifolia

Rotala rotundifolia is a popular, fast-growing stem plant whose leaves shift from green to pink-orange under high light with CO2. In lower light it stays green and grows more slowly. Works well in background groups, creating a soft, feathery effect.

Evidence: verifiedConfidence: medium

Care at a glance

Difficultyeasy

Lightmedium

CO2Beneficial

FertiliserNot essential

Growth ratefast

Max height50cm

Placementbackground

Min tank30L

Water parameters

Temperature20–28°C

pH6–7.5

Shrimp safeYes

Herbivore risklow

Propagationstem cuttings

Beginner guidance

Plant in bunches; trim the tops and replant for a bushy background. Higher light will bring out red/orange colouring. Easy to propagate from cuttings.

Sources

Rotala rotundifolia. Wikipedia — SE Asian species overview; aquarium use as stem plant with red colouration under high light.
Rotala rotundifolia. Flowgrow — Colour response to light intensity, CO₂, and phosphate; trimming and propagation.

Fish whose water overlaps

Peaceful freshwater species with overlapping temperature and pH — still run a pair check for the real mix.

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Plan the tank around this plant

Set a 30L+ footprint, then verify livestock before you buy Rotala Rotundifolia.

Open pair checker Tank builder

Tank hubs: 30L

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Common questions about Rotala Rotundifolia

Does Rotala Rotundifolia need CO2?: Rotala Rotundifolia grows without CO2, but slower and less dense. Liquid carbon or injection makes the difference between a thin patch and a full carpet.
What light does Rotala Rotundifolia need?: Rotala Rotundifolia is a medium-light plant. Most modern aquarium LEDs cover this. Anything sold as planted-tank-ready works. The stock hood on a basic shop tank usually does not.
Is Rotala Rotundifolia beginner-friendly?: Rotala Rotundifolia is rated easy for difficulty. Plant in bunches; trim the tops and replant for a bushy background. Higher light will bring out red/orange colouring. Easy to propagate from cuttings.
Is Rotala Rotundifolia safe for shrimp?: Yes. Rotala Rotundifolia is safe in shrimp tanks. The usual quarantine still applies: any plant from a commercial nursery should be soaked and rinsed first to flush copper and pesticide residue.