Good morning everyone! So I have a question. My doser for alkalinity ALWAYS leaves a build up of some sort of residue at the end of the tube where it goes into the water. So 1) what is that residue? 2) is there a way to stop this from happening? & 3) is this potentially leaving something behind that really should be going into the water? All my corals seem happy and are growing, it’s just a concern.
