Detritus/brown algae explosion, help

[Rodney]

Also I tried to post pics it's just not letting me at this time my phosphate levels aren't even showing on the scale the only thing I have is the nitrates at 5 ppm
The tanks been cycled for about 6 months now give it take and seems very healthy
The algae almost looks like hair algae but it's brown and I know the on the substrate it's detritus cuz the wife was over feeding I'm guessing this all stems from that