As rookie BBB'ers, we have aced last season living by the letter of the BBB law, but we will be going away for the summer, and have family using our pool on weekends only. A neighbor has agreed to do whatever light maintenance is necessary, including testing with the Taylor a few times a week, but he is not willing to go through the hassle of hauling liquid bleach. We were wondering what the experts would recommend in our case.
1) I have read that cal-hypo's main chemical downside is increased CH, but when I test my CH it is 130 (13 drops at 25ml testing). Would it be OK to have our neighbor use cal-hypo powder for one summer?
2) Even if the answer to 1 is yes, it is still too much to ask our neighbor to constantly maintain the chlorine with cal-hypo. While I imagine a tab-based chlorinator is a dirty word around here, can we get an exemption to ensure that the pool stays clean? If yes, are there any specific tabs that we can use. (Currently, our CYA is ~15-20).
3) Ideally, we are thinking of the combination of a chlorinator for ongoing fc injection and our neighbor adding cal-hypo if a slam is needed. If there are better solutions under the circumstance, they would be appreciated.