Marimo Moss Ball (Aegagropila linnaei) is a beginner-level aquarium plant. A slow-growing green algae ball that is easy to keep. Roll it occasionally and keep it out of direct sun and hot water.

Care facts at a glance

Scientific nameAegagropila linnaei
FamilyCladophoraceae
OriginNorthern lakes
Height1-3 in
LightLow
CO2Not needed
PlacementAnywhere, loose
Growth rateVery slow
Temperature55-78°F
pH6.5-8.0
DifficultyBeginner
PropagationDivision

Quick tips

  • Roll it now and then.
  • Keep it cool.

San Diego water

Tolerates San Diego's hard, alkaline tap water (pH roughly 7.6-8.6) with slow acclimation and a conditioner that handles chloramine. Learn the numbers in our San Diego tap water guide.

New to planted tanks? Start with our beginner planted tank guide and the plant fertilizer guide.

Find it at Pet Zone

Pet Zone Tropical Fish is a San Diego aquarium store with two locations. Stock changes daily, so call ahead if you are after a specific species or plant. Shop online at petzonesd.com.

Pet Zone Convoy

4160 Convoy St, San Diego, CA 92111
(858) 987-0309
Open daily, 10am-6pm

Aquascaping, planted tanks

Pet Zone Mid-City

4266 University Ave, San Diego, CA 92105
(619) 283-1812
Closed Monday; Tue-Fri 10:30am-6pm, Sat 11am-6pm, Sun 11am-4pm

Monster fish, koi