Tropical Fish Keeping - Aquarium fish care and resources

Tropical Fish Keeping - Aquarium fish care and resources (http://www.tropicalfishkeeping.com/forum.php)
-   Freshwater and Tropical Fish (http://www.tropicalfishkeeping.com/freshwater-tropical-fish/)
-   -   Questions about various organisms! (http://www.tropicalfishkeeping.com/freshwater-tropical-fish/questions-about-various-organisms-22902/)

BORGUSX 04-08-2009 09:39 PM

Questions about various organisms!
 
1.How does algae get into the water source?

2.Do I have green algae since on the glass,there are some circles with a dot in the middle?

3.I do have some growths on the glass that seem to be clumps of purple grass,what is it?


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