When I say new all media rock is transfer from my old tank
Tank is fallow as I had ick/velvet outbreak
No is around 5ppm
Po undectable but that's not supprising consider the algea
You can stir the sanded up with something and the socks will collect it. I used to grab a syphon hose and put the end to the sock holder and sift the sand so the socks can collect the algae and you keep your water so you dont have to do a water change