Mine has a similar dead spot. Always white, doesn't grow algae. It's so weird.
That'll eventually attach to the glass and the frag rock will just be extra support. I know in the 125 my single was very loose but never fell unless I bumped it. Small magnet on 5/8" glass.
That'll eventually attach to the glass and the frag rock will just be extra support. I know in the 125 my single was very loose but never fell unless I bumped it. Small magnet on 5/8" glass.