I've been reading about pool chemistry and BBB on this site, and have learned quite a bit.
What do you think of doing this?
In a brand new just filled pool, using Trichlor (in a chlorinator) until CYA level reaches N (not sure what "N" should be - what should it be?).
Then switch to BBB.
The reasoning is that since it is a new pool (and my first - total noob), the pool company will "support" me for a while using a "pool company approved method" (Trichlor) should anything go haywire. And it will get me some CYA in the pool.
But I do not want to use the Trichlor for an extended period because I do not want to be draining and refilling the pool due to CYA build up - there are issues with where the water will go if it is drained, and I have a well which makes it scary to pump massive amounts of water into it.