Emelinda76
Aquarium Advice Freak
What is the best reef salt?
mr_X said:what is your alk at if your calcium reads 500? is this an API test kit by any chance?
mr_X said:KH is just a measure of alkalinity. they are the same really. alkalinity is very important in a reef tank. how are you not testing for alk? isn't this the test kit you are using?
Red Sea Alkalinity Pro Lab Test Kit
you may very well have a 550 on your calcium test, but if so, your alk is going to be low.