Originally Posted by Fin2you
interesting that they supposidely don't do well in the "heated betta" water. I bought 2 real ones (I knew to look for the "fake") and split them up to divide them between all of my 8 tanks. They are all growing so huge that I can easily share with friends in less than 1 mth!
They are still fake. They are living algae, but they aren't marimo... They fall kind of between fake and real.
There are two kinds of fakes - ones made from the dyed stuff and ones made from a totally different algae that has been rolled into balls. Those kind don't naturally "reproduce" by dividing, nor do they naturally form a ball shape. People roll them into balls and sell them.
But they are more hardy as it is a different algae, so are easier to sell and store. They also grow a LOT faster, but need maintenance to keep them round. Real marimo grow very very slowly even in perfect conditions. That yours grew fast is a huge indicator that it is a different type of algae. Real ones grow less than a cm a year.
Marimo all naturally live in very very cold lakes, and will rot from within if in too warm of water for too long.
In the end though, unless you are a marimo purist (for me it is important - marimo are an important thing in Japan), if you are happy with your algae ball then all is good. It just isn't actually a marimo.