Phosphate missing in action?

[Art2249]

This tank has been running since January. I have never detected phosphates. i was using API and I just tested with NYOS and still got 0. I could't detect nitrate with api but with salifert profi i finally detected 2.5 nitrate 2 weeks ago. today that was back down to 1 ppm nitrate.
other parameters are
430 calcium
1290 mg
dkh 8
salinity 1.026
ph 8.1
temp 78
I just recently lowered alkalinity fro 11 to 12 range down to 8. i was putting to much kalk in my dripper. So I reduced the amount and will keep an eye on calcium.
here are some pics. one from 2 months ago and 3 from today. This will eventually be a quarantine for my 160 build here

Thread
Art2249's 160g Build

 

[mcarroll]

Dose some nutrients like Seachem or Brightwell? (Sodium|Potassium Nitrate|Phosphate)

What are you feeding?

 

[Art2249]

Dose some nutrients like Seachem or Brightwell? (Sodium|Potassium Nitrate|Phosphate)

What are you feeding?

Thx I'll look into those additives. I feed flakes/pellets/ but mostly frozen cube 3 times a day. Also been adding some coral frenzy and some zooplankton stuff from brs. Doesnt seem to make a difference.

 

[DesertReefT4r]

Feed more of the flake and pellets for a while. There is a lot more no3 and po4 in those than in frozen food. If you are running any carbon or gfo stop for at least a few weeks.