Hmm, lots of questions to answer...

First Tomcat:
I'm not at all concerned about saving money (or I wouldn't consider going back to baquacil!!) I was just trying to get a clearer (and cleaner feel) to my hot tub than what I was getting with baquacil and really love the effect of BBB in my pool. I used to use bromine as well many moons ago with my older hot tub and also experienced the hot tub itch crud on occassion so thought that I'd try chlorine instead. Honestly it has been so miraculous on the pool I figured that with a tad of maintenance it would be as good in the tub.

Richard:
Yes it's 120 gal according to the manufacturer. It's a three seat, really two seat and a lounge. Pretty small, but that's all I wanted and needed.

Interesting thought on the di chlor and CYA being too high. I will definitely test tonight. I was only adding a few teaspoonfuls at a pop and thought that the CYA would not go very high at all from such a small amount but perhaps it's through the roof. Never checked because I assumed it'd be real low.

In regards to what I was adding with the Baquacil, I'd have to say....I don't know! I just bought the stuff they said to in the book and stuck it in when the test strips recommended it. They were called: A. Sanitizer. B. Shock (recently they changed the name to oxidizer.) C. Waterline control. Also obviously PH & alk up and down, and their "water clarifier" that didn't work worth a darn....

Now for a question on Pseudomonas aeruginosa...Knowing that one has it in one's tub, how high would the CL need to be and for how long would it need to be there to kill it off?

In regards to losing CL to sunlight. I only go in at night so UV shouldn't be an issue.