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Slender Pondweed care guide

Slender Pondweed (Potamogeton gayi) — medium light, 20-27 °C, pH 6-7.5, no CO2.

Overview

Slender Pondweed (Potamogeton gayi) is an aquatic plant of the family Potamogetonaceae, listed in the Aquairi knowledge base as a beginner-level species. It is typically grown under medium light and without obligatory CO2 injection on nutrient-rich aquasoil. Slender South American stem plant with very narrow leaves and red-bronze tones in good light. Provides delicate texture in mid-to-background; tolerates moderate light without CO2.

Taxonomy

  • Family: Potamogetonaceae
  • Genus: Potamogeton
  • Scientific name: Potamogeton gayi

Habitat

Potamogeton is a large cosmopolitan genus of pondweeds (Potamogetonaceae) of ponds, lakes and slow rivers; submersed species bear translucent, often wavy leaves on branching stems. In the Aquairi knowledge base, populations associated with this form are recorded from South America.

Growth requirements

  • Lighting: medium
  • CO2: not required
  • Temperature: 20-27 °C (68-81 °F)
  • pH: 6-7.5
  • GH: 3-12 °dGH
  • Substrate: nutrient-rich aquasoil
  • Maximum height: 40 cm
  • Growth rate: medium
  • Recommended placement: background

Placement

A background stem grown in groups; bright light tightens the form, while the translucent leaves give an airy, naturalistic look. In the Aquairi knowledge base this form is recommended for the background under medium light and without obligatory CO2 injection, using nutrient-rich aquasoil.

Propagation

Propagated by cuttings and by rhizomes or winter buds (turions) in some species; trimmed tops replant readily. Documented propagation techniques for this entry include: stem cuttings.

Common issues

Fast growth can shade slower neighbours, and the thin leaves accumulate algae in low flow; regular trimming and good circulation prevent this.

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