Algae problem

[Mike220]

Hello everyone
I have 250 net gallons
My NO3 close to zero and Po4 is zero . Red sea test kit. But i have a little brown algae on live rock and I clean the front glass every 2 days.
I running gfo and carbon.
Please help
Thanks

 

[Flippers4pups]

Need your water parameters. How long has the tank been running and what are your lights?

 

[Mike220]

My tank almost 1 year old. I used 5 AI hydra 52.
Cal 420
Alk 8 to 9 dkh
Meg 1300
Temp 75.7 to 76.5 F.

 

[saltyfilmfolks]

My tank almost 1 year old. I used 5 AI hydra 52.
Cal 420
Alk 8 to 9 dkh
Meg 1300
Temp 75.7 to 76.5 F.

a picture of the algae would be great. Whats the Ph?

 

[Mike220]

My PH is problem because CO2 in my house. Some time on day go up 8.05 and 7.94 night
Most from 7.98
I will take some pictures tomorrow. Lights is turn off now. Sorry

 

[BlueCursor]

I bet you are carbon dosing. I always get diatoms on the glass with carbon dosing. It was much worse when I used bio pellets. With ethanol, it isn't nearly as bad. When I stopped dosing for several months it went away completely after about 2 months, and I only got green algae on the glass.

I had to resume dosing carbon, so I just wipe the glass two to three times a week.

 

[Mike220]

I bet you are carbon dosing. I always get diatoms on the glass with carbon dosing. It was much worse when I used bio pellets. With ethanol, it isn't nearly as bad. When I stopped dosing for several months it went away completely after about 2 months, and I only got green algae on the glass.

I had to resume dosing carbon, so I just wipe the glass two to three times a week.

Yes, that i do every 2 day on clean the fron glass.