Help Brown algae spots

[vzhp]

Hello
my tank is 1 year and 8 month old
I started to get Brown algae spots in my 75gal tank.
im using Radion LEDS, RODI.

can someone please tell me what to do to get rid of this problem.
thank you.

 

[thirty5]

What are your water parameters??

Do you have a TDS meter on your RO unit? Have you changed DI Resin?

Where are the spots?

How long is your lights on?

 

[vzhp]

TDS out is 0.
I havent changed the filters in rodi.
The spots are on the glass.
The lights are on from 9am to 8pm
They dim, morning, day, and night.

 

[ecvernon]

There are many factors that can be the cause. First step is to test your parameters especially po4 nitrate nitrites. What is your bio load? What are you dosing feeding? Are you running any phosphate removing media?

 

[daisy]

MagFloat is a magnetic glass cleaner. You can pick one up at any pet store that has fish stuff I think. Just scrape the algae off the glass.

Keeping nitrates very low (low nutrient load) will help, perhaps decreasing light time, but in truth, it's pretty normal for some algae to grow on the glass.

 

[myblock175]

you're running your lights way too long. And check your phosphate