I havent used the Hagen kit, but it sounds similar to the Red Sea kit in operation. I prefer the Salifert, once youg get used to it its not hard and more accurate. Are you testing for alkilinity as well, the 2 are very co dependant.
In a soft coral tank, you should be fine with minimal dosing of B-ionic, unless you have vigorous coralline growth. These calcerous algaes can use a lot, whereas most soft corals only need enough for sclerite production as the coral grows. These are the little calcite needles most soft corals incorporate in the flesh to help add support.
Obviously the stoney corals will consume more calcium , with the fast growing SPS like acropora , etc really sucking it up.
Reading of 6-700 sounds way to high, getting close to the point that it will start to precipitate out(like snowflakes) unless the alkalinity is way to low. I would double check it, preferably againt a better test kit , HTH
In a soft coral tank, you should be fine with minimal dosing of B-ionic, unless you have vigorous coralline growth. These calcerous algaes can use a lot, whereas most soft corals only need enough for sclerite production as the coral grows. These are the little calcite needles most soft corals incorporate in the flesh to help add support.
Obviously the stoney corals will consume more calcium , with the fast growing SPS like acropora , etc really sucking it up.
Reading of 6-700 sounds way to high, getting close to the point that it will start to precipitate out(like snowflakes) unless the alkalinity is way to low. I would double check it, preferably againt a better test kit , HTH