Tank, Ar620 t about 120 ltrs, no sump.
Skimmer, aqua medic biostar flotor, running a surface skimmer.
Flow, sieo m820 3200 ltrs hr, have another but needs to run on low, but im not using.
lighting, aqua medic ocean 150, 150 watt 14000k m/halide
dosing, nothing at the mo i have got ca,kh,mg, but dont have any test kits yet.
S.G 1.024
PH 8.3
Ammo 0
Nirite 0
Nitrate 0
So a gravel clean could be the go, all my base rock has the same kind of colour.
Hope this pic isnt to big, appologies mods