Originally Posted by mhayes462
Yeah, the purple, but also the brown with the bubbles on it. I figured the purple/red was coralline but didn't know if it should be lumpy or clumps like that.
The upper-right picture- if the circular pink base begins growing a quarter-inch tube, it could be a new filter feeder growing. But I'd say most of that looks like diatoms and/or cyano
. Are you using RO
? Your tank is established, how old are the bulbs in your fixture? Have you been keeping up with your water changes, and any changes in feeding?