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algaehardFreshwater

Water Net Algae

Hydrodictyon reticulatum

Family: Hydrodictyaceae

📍 Worldwide in nutrient-rich ponds and slow rivers

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Remarkable bright green net-like colonies — a tessellated honeycomb of cells visible to the naked eye. Beautiful under a microscope but a serious nuisance in garden ponds. Thrives in warm, nutrient-rich water. Manual removal is the primary method as few animals eat it effectively.

Keeping this species

role
nuisance — ponds
cause
high phosphate, warm stagnant water
control
manual removal, water change, UV steriliser

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Tips from the community 💡

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Natural Habitat Temperature

77°67°57°JFMAMJJASOND

57°F 77°F seasonal range  · (Dec low, Jul high)

Stats

Community tips0
Kept by0 hobbyists