Parts Parts Are Saltwater

Parts Parts Are Saltwater
What is the brown stuff on the glass an powerheads in my saltwater fish tank??

I have been seeing some brown spots all over the front of my tank and on the powerhead, also on the part of where the water flows into the tank from the filter. It is the color of rust. what is it???

Likely brown or red algae, brown is seaweed and a sign of a healthy tank, red is lack of oxygen and not healthy. Due to the placement I’d go with brown, get some good snails to take care of it for you.

The Saltwater Rom MEP [CLOSED – Waiting for 2 parts!]