Just tossing my two cents.
I use Coral Pro Red Sea salt mix and after a water change my alk is around 170 ppm. I have about 20 coral and of those about 15 are stoney. When I was doing my initial testing tp figure out my dosing regiment, the alkalinity dropped to around 150 ppm over 7 days.
Since my salt mixes up at 170 ppm, I dose alk daily to keep it around that number so that a water change doesn't shock my coral, especially my SPS coral.
Stability is more important than chasing a specific number as many have said before.
I use Coral Pro Red Sea salt mix and after a water change my alk is around 170 ppm. I have about 20 coral and of those about 15 are stoney. When I was doing my initial testing tp figure out my dosing regiment, the alkalinity dropped to around 150 ppm over 7 days.
Since my salt mixes up at 170 ppm, I dose alk daily to keep it around that number so that a water change doesn't shock my coral, especially my SPS coral.
Stability is more important than chasing a specific number as many have said before.