What is this light brown stuff?

[cracker]

I think it's slime algae. Whatever it is it's taking over thanks ! Please click on the red x !~

 

[eliramos]

pic isn't working

 

[eliramos]

Looks like slime algae to me
Have you checked your nutrient levels
How long has the tank been established
Looks new to me

 

[HovaReeFs]

Hmmm how long has ur tank been established?

 

[cracker]

Thanks gents for the response The tank is about 6 years old. I had a water test from my well trusted LFS on the 4th.
sal 1,025
Po4 0
No3 0
Ca 460
kh 8.4
mg1280
I have been running bio pellets for about 6 months. now I think I over did it. It took care of the HA and bubble I had, however this brown slime took over. I doubled the in tank flow, hammering water changes, blasting and scrubbing the rock. I agree with the slime Id. Thanks,