I really like dosing Kalk water its a bit more work but I have always had good results with it.
Mag is at 1420 I dose for that
CA at 460
SG 1.025
PH 8.1-8.3
NO3 0.2ppm
No NO2 and ammonium
I use Instant ocean and add Mag and CA to bump initially.
Then Dose Kalk to keep my CA up if it gets to high I use just RO by itself for for a few days.
I have always found coraline to be a bit of a pain though, but better than the green stuff. 
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150 Gal system 3'x3' 400W M/H, Bekett skimmer, Dart return,1/4 HP Chiller
180 Gal Drop tank, LED lights, Bubble master 250 skimmer,Hammerhead on a closed loop, Speed wave return.
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