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AlgaehardFreshwater

Blanket Weed

Cladophora glomerata

Also known as Cladophora, Cladophora Algae Ball

PlantaeChlorophytaUlvophyceaeCladophoralesCladophoraceae

📍 Worldwide in ponds, streams, and rivers

Dense, rough-textured mats of dark green filaments that blanket pond plants and surfaces. Common in outdoor ponds and highly nutrient-rich tanks. More coarse and branched than soft hair algae. Difficult to eradicate fully — physically remove as much as possible before treating with algaecide or reducing nutrients aggressively.

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Quick Facts

role
nuisance — ponds and high-nutrient tanks
cause
high phosphate, high light, warm temperatures
control
manual removal, reduce nutrients, UV steriliser in ponds

Water it likes

ph
6.5–8.0
hardness
5–20 dGH
temperature
50–72°F (10–22°C)

Legality

No state or federal restrictions on record for this species.

Not legal advice, and possibly incomplete or out of date. Rules vary by state and locality and change over time — always confirm the current regulations with your state wildlife or agriculture agency before buying, keeping, or shipping this species.

Stats

Community tips0
Kept by0 hobbyists