Hey guys, I'm matt and I'm from Nebraska. I'm fairly new to saltwater tanks. Been doing planted fresh water tanks for most of my life. A friend of mine recently got divorced and his wife had a saltwater tank. He had no idea how to take care of it. Right now I'm slowly learning and getting my tang healed from hlle. The tank is a 55 gallon, has a fx6 canister filter and a powerhead. It filters approximately 13 times an hour. The tank has been on tap water it's whole life and I'm slowly switching it to ro water. Recently got my first coral, this tanks been running for around 5 years. Here's some photos of tanks.
This photos has me worried, I have this red growth going on. I was told it's probably cyno algae. The Bubbles are actually from the bubbler behind the rock, the rock has a layer of sand on it. The sand makes it look fuzzy but this is the only place I have this growth and is the oldest piece of liverock in the tank. It doesn't really come off easy. After the red sand comes off I have to flake the red stuff off. I was thinking it was coralline but does coralline spread to sand?
Merry Christmas!


