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PlantintermediateFreshwater

Didiplis Diandra

Didiplis diandra

PlantaeTracheophytaMagnoliopsidaLythraceae

📍 North America

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A slender, delicate stem plant with fine, needle-like opposite leaves. Under high light and CO2 it develops vivid orange-red colouring that makes it a stunning accent in Dutch and Nature Aquarium layouts. It is sensitive to low light and nutrient deficiencies, which quickly cause yellowing.

Common Diseases

Nutrient Deficiency (Nitrogen/Iron)

Symptoms

Yellowing of new growth, pale leaves, stunted growth despite adequate light

Treatment

Increase fertilizer dosing with all-in-one or iron-specific supplements; ensure CO2 is present; test water parameters and adjust macro/micronutrient balance

Algae Overgrowth (Green/Black Spot)

Symptoms

Green or black algae coating stems and leaves, reduced photosynthesis, plant decline

Treatment

Reduce photoperiod to 8-10 hours daily; increase water changes; add algae-eating fish like Otocinclus or shrimp; ensure CO2 and nutrients are balanced

Melting (Tissue Decay)

Symptoms

Rapid leaf loss, mushy stems, plant deterioration after introduction or environmental shock

Treatment

Maintain stable water parameters (pH 6.0-7.0, temperature 20-28°C); ensure consistent CO2 injection; perform 25% water changes; trim affected portions and allow plant to recover

Low Light Stress

Symptoms

Pale coloration, loss of red pigmentation, elongated internodes, slow growth

Treatment

Increase light intensity to 2+ watts per liter; verify lighting duration is 8-10 hours daily; move plant to higher-light area of tank if possible

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Quick Facts

co2
Required
light
High
placement
Mid–Background
tank size
15 gallons minimum
growth rate
Moderate

Water it likes

ph
6.0–7.0
hardness
2–10 dGH
temperature
68–82°F (20–28°C)

Stats

Community tips0
Growing in0 tanks