Hight kh consomation

[Popkorn0407]

Hi! Im new to the forum nice to meet you all!
Question!! I got hight kh consomation i think im dosing 200ml red sea liquid kh for my 90 g tank sps. I have 27 sps frag and 3 small colonie whit 1 maxima clam 3 lps. Is that normal im in reef for 7 year now but never got that mush of consomation but never got a sps tank. But all sps seem ok polyps extention and nice color
Parameter.
8/8.3 kh
420/440cal
1320mag
1.026
No3 1
Po4 0
Light t5/led
Hight flow.
Im also dosing Amino 4ml/day and redsea trace element 1ml day

 

[Popkorn0407]

Its 200ml /day and im also AWC 2g/day

 

[Popkorn0407]

Coze if o make the conversion its a drop of 5.5 / 6 kh per/day annyone have this kind of consomation?