I have been battling brown algae for months now....NOTHING I do gets rid of it. I am wiping down my glass twice a day....I wake up and it needs cleaning and especially at the end of the day when the lights were running, MAJOR algae EVERYWHERE. And this is relatively recent. These are the details of my tank./

180g mixed reef that has been up and run-in g for ov er 10 years.
Ecotech Radion G5 Blues that run about 11 hours/day on the LPS/Soft Coral template.
Paramegters are:

Salinity: 1.026
Temp. 78
pH: 8.0
Ca: 422
P04: .69
dKh: 9.6
Nitrates: off the charts

I have been battling Nitrates and Phosphates for YEARS...I have tried everything, the latest of which is a refugium where my Chaeto is growing nicely.

I admittedly don't do water changes as often as I should.

But what explains all this algae which is choking out my VERY easy to keep softies and requiring me to clean the glass 2 x/day?




Who Am I Here?
Premium Member
Nitrates and phosphates are algae fuel (both macro and filamentous). While I have no experience with it, a quick solution to lower both could be NoPox

However, you still want to get to the cause of the high nutrients. I’d consider starting water changes and maybe siphoning your sand and blowing off your rocks (if you’re not already doing that)

Fizban’s BFF

New member
What is your livestock(not including inverts) total? How many people and animals live in your house? Is there a fan blowing on your lights? Anyone with skin problems? Carpet flooring? If you are not over feeding, then it’s possible that a ton of airborne particles are falling in your tank? Sand or bare bottom?