Saltcorner
By Bob Goemans
By Bob Goemans
Not Reef Tank Suitable
Not Suitable for Fish-Only Tank
These forms of algae belong in the Order Cladophorales, which contains varied forms of growth. One of the most problematic are those in the family Valoniaceae, which have spherical or oval-formed balloon-like vesicles consisting of one large cell that may be as large as 2 inches (5 cm) in diameter. They can be attached to the substrate by hair-like rhizomes or be free-floating. They are found in all warm seas, even at great depths, e.g., almost 300 feet deep (80 m).
The three genera of concern are: Valonia, Ventricaria, and Dictyosphaeria. These are generally introduced to aquariums on live rock where they form grape-like growths. When their membrane-like wall material wears out or ruptures, internally forming new cells/bubbles are released and can rapidly spread throughout the aquarium. The best way to reduce or control their growth is to remove by hand the bubbles without breaking them when seen!
