Rotala Rotundifolia vs H-Ra vs Macrandra Comparison Guide: Red Pick

Three rotala varieties cover the full spectrum from beginner low-tech to high-tech showpiece reds, and they look identical in early growth. The rotala comparison question matters because dropping macrandra into a low-light tank guarantees melting and failure within four weeks. This guide from Gensou Aquascaping at 5 Everton Park ranks the trio against light, CO2 and skill level.

Quick Verdict

Pick rotala rotundifolia if you want a forgiving low-tech red-pink stem in a 60-litre+ planted tank without CO2. Pick H’Ra if you want orange-red colouration in a mid-light CO2-injected scape. Pick macrandra only for a high-tech showpiece with 80+ PAR lighting and pressurised CO2.

Rotala Rotundifolia: The Forgiving Red-Pink

Rotala rotundifolia produces small round leaves on slim stems, with tip colouration shifting from green to pink under medium-high light. Light requirement: medium, 40-60 PAR for colour expression — without enough light it stays plain green. CO2 optional but enhances colour and growth rate substantially. Water tolerance: pH 5.5-7.5, GH 1-15, temperature 20-30°C. Highly adaptable. Trim regularly and replant tops for bushy growth. Reproduces by side shoots from each node. Beginner-friendly stem plant for first-time aquascapers.

Rotala H’Ra: The Orange-Red Mid-Light Pick

Rotala H’Ra (a selectively bred variant) produces narrower leaves with pronounced orange-red tip colouration under medium-high light. Light requirement: medium-high, 50-80 PAR. CO2 strongly recommended at 25+ ppm. Water tolerance: pH 5.5-7.0, GH 1-10, temperature 22-28°C. The orange tone separates it from typical pink-red rotala and works as a colour bridge between greens and deep reds in a Dutch-style scape. Slightly more demanding than rotundifolia but rewards proper husbandry with vibrant colour.

Rotala Macrandra: The High-Tech Showpiece

Rotala macrandra produces large 2-3cm broad leaves with deep blood-red colouration that runs through the entire stem under optimal conditions. Light requirement: high, 80-120 PAR. CO2 mandatory at 30+ ppm. Heavy nutrient demand — full liquid fertiliser dosing including iron, potassium and trace elements. Water tolerance narrow: pH 5.5-6.8, GH 1-6, temperature 22-26°C. Singapore PUB tap softness suits it but the warmer ambient pushes the upper edge. Melts dramatically when parameters swing. Among the most demanding stem plants in the hobby.

Side-by-Side Spec Comparison

Leaf size: rotundifolia 5mm, H’Ra 8mm, macrandra 25mm. Colour: rotundifolia pink, H’Ra orange-red, macrandra deep blood red. Light demand: rotundifolia 40-60 PAR, H’Ra 50-80, macrandra 80-120. CO2: rotundifolia optional, H’Ra recommended, macrandra mandatory. Difficulty: rotundifolia easy, H’Ra intermediate, macrandra advanced. Price: rotundifolia SGD 6-12, H’Ra SGD 10-18, macrandra SGD 15-30 per portion.

Decision Framework

If this is your first attempt at a coloured stem plant and you do not have CO2, rotundifolia is the only viable pick. If you have moderate CO2 and 50-80 PAR lighting, H’Ra delivers reliable orange-red colour without the failure rate of macrandra. If you run a competition-grade high-tech scape with full hardware, macrandra rewards the investment with the deepest red colour available. Group all three in a Dutch street layout for a graduated colour transition from pink through orange to deep red.

Singapore Sourcing and Pricing

Iwarna and Polyart stock rotundifolia year-round at SGD 6-12 per bundle. H’Ra runs SGD 10-18, often sold in tissue culture cups by Tropica or Aquario at the upper end. Macrandra at SGD 15-30, with rare colour variants like macrandra “mini butterfly” or “Pearl” climbing to SGD 30-50. ANS specialises in tissue-culture stem plants. Buy 2-3 bundles for a 60cm tank background and let them propagate. Pair with full liquid fertiliser regimens and aquasoil from the aquarium plants range.

Common Mistakes

Buying macrandra and dropping it into a low-tech 30W LED setup is the universal failure pattern — the plant melts within 2-3 weeks. Second mistake: keeping any rotala without regular trimming; bottoms turn brown and bare while tops bush at the surface. Trim aggressively and replant. Third: dosing only macronutrients without iron and trace elements — colour fades to green even with adequate light. Fourth: skipping CO2 for H’Ra and expecting full orange-red colour; the colour gene needs CO2 + nutrients + light all three.

Trimming and Propagation

All three rotala varieties propagate identically: snip stems 5-10cm below the growth tip and replant the cuttings into substrate. The stub left in substrate sends up multiple side shoots within 7-14 days. For dense bushes, trim every 2-3 weeks. For tall background curtains, trim less frequently and let stems reach 25-30cm. Pair with iwagumi hardscape from the hardscape range and quality substrate.

Related Reading

• Rotala Rotundifolia Care Guide
• Rotala Macrandra Care Guide
• Red Aquarium Plants Overview Guide
• Stem Plant Trimming Guide
• Dutch Aquascape Style Guide