I have 2 55 gallon tanks. Recently both tanks broke out into substantial amounts of red algae. I was under the impresion that red algae was most common in marine tanks. One tank was previously set up as marine. I was curious if this could play a part in the outbreak. I did some water changes and treated for algae blooms. It now seems to be undercontrol, until this morning I noticed that I am now having a bloom of green algea in one tank. I was curious if anyone may have some incite into this algae bloom, or suggestions to get ride of the algae.