Hi - Probably been talked about but I am new -- I have a new cedar hottub with an ozonator and an ionizer (electronic) -- I am having to add a lot of alkalinity to get ph and alk up to normal levels -- I am still confused about whether I need to add some chlorine or not. I am registering some chlorine (like .5 ppm) as they system is creating that. Do I need to increase every time I change out the water? Right now due to the cedar I am changing out the water frequently (weekly) cause it gets so dark red from the tannins. I hear this will slow down over time. I just want to make sure I am getting the best info and I don't want to harm the new system but more importantly want to have proper water management.