Quick Care Facts

Water Type
Freshwater (Cold to Temperate)
Light Requirement
Low
CO2 Requirement
Not required
Growth Rate
Extremely Slow
Temperature
64–74°F (18–23°C)
pH Range
6.5–7.5
Placement
Resting freely on substrate; rotate occasionally
Nutrients
Low nutrient demands

Overview & Characteristics

A unique spherical green algae colony native to cold lakes in Japan and Northern Europe, beloved for its simplicity and charm.

Water Parameters & Environment

Stable water parameters are critical for long-term health. Avoid rapid fluctuations in temperature and pH when performing routine water changes.

  • Temperature: 64–74°F (18–23°C)
  • pH Range: 6.5–7.5
  • Water Type: Freshwater (Cold to Temperate)

Evaluate whether your current aquarium chemistry matches these thresholds with our free Water Parameter Safety Checker or calculate water replacement with the Water Change Calculator.

Lighting, CO2 & Aquascaping

Lighting & Carbon: Requires Low light. CO2 supplementation is Not required.

Placement: Resting freely on substrate; rotate occasionally

Nutrient Demands: Low nutrient demands

Health & Sensitivities

Browning or rotting if kept in warm water above 78°F; loves occasional gentle rinsing.

Photographing this species for tank logs or identification? Read our step-by-step Fish Photography Guide and learn how to document water parameters in Aquarium Water Test Notes.

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Frequently Asked Questions

What water parameters does Marimo moss ball require?

Marimo moss ball thrives in a temperature range of 64–74°F (18–23°C) with a pH of 6.5–7.5 in a Freshwater (Cold to Temperate) environment. Maintain stable water chemistry and test regularly.

Is Marimo moss ball suitable for a community aquarium?

Marimo moss ball is safe and beneficial for community aquariums, offering natural shelter and utilizing ambient nutrients without harming fish or invertebrates.

Editorial methodology

Aqua AI species profiles are compiled from canonical database records, taxonomy standards, and verified captive husbandry guidelines. Captive water ranges represent general baseline parameters; always observe livestock behavior and perform regular water tests.