IMO, I don't think you need a doser untill you get some pretty large colonies and your alk/ cal are dropping rather quickly. But I do agree it makes life easier, I wasn't saying a doser isn't needed, but as far as priorities in figuring out why the tank isn't in balance and such I feel a doser can be moved twords the back of the list.
I don't need a doser right now but I will when hockey starts up again .

