lol yup I'm from Burnaby, we have a street by a hockey rink here called Joe Sakic Way.
I don't know about the rotting food, anything is always possible but I've been feeding flake food and mysis shrimp and they seem to eat all of it, at least enough so that no pieces are left big enough to start rotting.
I do use Calcium, I'm using Kent Marine Concentrated Liquid Calcium as directed and my superbuffer is Kent Marine Superbuffer dKH.
Perhaps I should check my magnesium levels? I don't have a kit for that yet, what levels should they be at?
Lorna, can you please rephrase your question please, lol its a bit hard for me to understand. Also, where in Vancouver Island are you from, I go over there periodically and it is so beautiful!