Confused

[G_Lows]

My nitrates read around 5ppm and phosphate at the moment are a hard 0. Had a little spike from reef roids and left my gfo in for a bit too long. However, I have some red turf algae and I get a film over my glass that needs cleaned off everyday and some of my sps doesn’t look how it did some time ago (part of that being from a clown goby that munched on it but he’s gone). Anyway my question I guess would be how can I get my phosphates up a little bit and keep them stable, but at the same time get rid of the film and turf algae?

Tank is 4 years old. TIA!!

 

[G_Lows]

My nitrates read around 5ppm and phosphate at the moment are a hard 0. Had a little spike from reef roids and left my gfo in for a bit too long. However, I have some red turf algae and I get a film over my glass that needs cleaned off everyday and some of my sps doesn’t look how it did some time ago (part of that being from a clown goby that munched on it but he’s gone). Anyway my question I guess would be how can I get my phosphates up a little bit and keep them stable, but at the same time get rid of the film and turf algae?

Tank is 4 years old. TIA!!

Basically I know there is nutrients in the tank but it seems to go to the turf algae or my glass or somewhere else before my corals can use it.