Moss Balls

fishhed

Small Fish
Oct 22, 2011
10
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#1
I have a 55 Gallon Freshwater (non-planted) Community Tank.

Is there any advantage to having Moss Balls in the tank? Do they provide any benefit? If so, how many?

Thanks


 

Feb 27, 2009
4,395
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36
#3
They are not a 'moss' despite their name in the fish aquarium industry. They are a slow-growing form of algae.

As any plant, they consume ammonia (or nitrite or nitrate, in that order) to grow, provided they have the other things they need (a source of carbon, other nutrients such as potassium and phospate, and sufficient light). In exchange, they provide some oxygen during the photoperiod, but consume it in darkness.

In my experience, they do best in medium-high light and lots of water movement. They collect debris in the tank and must be regularly cleaned off (either by you or smaller fish/shrimp/snails). When I had them, I would swish them around in the water I was removing during a water change, much as you would for filter media.
 

nelly2

New Fish
Nov 14, 2011
2
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#5
Another name for moss balls is Marimo it is a filamentous green algae found in a number of lakes in the northern hemisphere. A moss ball is a rare growth form of the species where the algae grow into large green balls with a velvety appearance. Colonies of such balls are only known to form in Iceland, Scotland, Japan and Estonia.