I have heard many times from experienced spa owners here and elsewhere, that the less you mess with the water the better off you will be. :-?
We have had our spa a couple of months and other than the obligatory first dumping and refill of the water (after 2 weeks) I have not had any real issues even though we use it every day.
However the manual indicates weekly maintenance of Bright and Clear (clarifier?), Enzyme, and Defender (prevent scale) to compliment the regular sanitizer regiment (we use Bromine Reserve/renew).
Is this pretty much standard maintenance, or over-maintenance? I don't want to cause water issues that wouldn't have existed otherwise. The Bright and clear seems to cause alot of foam initially and after scooping most out and running the filter I don't have an issue with foaming until the next treatment.