I'm pretty sure this is a sponge, It quite fast not sure what kind it is and if it's good or bad. I have a growing in two spots in my tank. The biggest one is starting to grow up the wall and they are mixing in with the bottom substrate.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I don't think it's algae you can see here that it's almost like a ball, and it's pretty solidAlgae or bacteria possibly. Has it changed color?
And no it has not changed colorAlgae or bacteria possibly. Has it changed color?
Hmmmm could be, wonder if I should remove it.....

