I've been doing BBB for the last year or so and the pool is great. But, i'm getting tired of lugging large jugs of 6% bleach from Walmart, so was thinking about a more convenient alternative. The local chemical supply has 68% cal-hypo. I calculate that it will cost me about two-thirds what it costs for bleach if I buy a 100 lb bucket of cal-hypo. However, I read in pool school that this will result in too high CH after a while.
So, given that I have rather low CH now (vinyl pool liner, so I haven't been concerned about it), seems like i could use cal-hypo until my CH gets up to 300 or so, and then go back to bleach.
Is this a reasonable plan?