my tank 2-3 yeras ago size:200x70x70 cm (1500 l)
4 pcs metal halide 150 w (2 pcs 10000 K and 2 pcs 20000K),
2 tube act blue , use P skimmer too, chiller 1hp 24-25 c,
ca 450, KH 7-8 ??
I, fe, mb,sr,mg at normal addition. NH4 ok.
test kit azoo, intrepret. additive azoo.
problem: liferock or coraline algae very poor.