How Do You Remove & Prevent Brown Diatom Algae In Reef Tanks?Reduce Livestock. Lets look further into each of these methods to help you get a better understanding of each. 1. Time. This is by far the main factor in the removal of Brown Diatom Blooms.
How To Get Rid Of Brown Algae In Fish Tank.
How do I get rid of brown algae permanently?Will water changes alone get rid of brown algae?Is brown algae bad for my reef tank?

The first step towards getting rid of brown algae is to determine why it has appeared within your saltwater tank.This is the most efficient way to get rid of the algae for good. Otherwise, you may spend a long time physically removing it, only for it to return within a week or so.
What is your maintenance schedule on this 15G tank? I looked at some of your other threads about green algae on rock and this is not the same thing. See if this link helps you identify whats in your tank. Reef Cleaners.

How to get rid of the brown algae growing in your tank!How can I get rid of growing brown algae from our freshwater aquarium? We are treating to remove silicate with Phosguard. His light is on 3-4 hours a day.