Why can't you lower the chlorine level?

You can certainly live with the stains if they don't bother you -- they don't affect the health or safety of the pool.

Regarding the other: your registration had several factors in common with registrants who cause problems. If you want me to change things, email me ( poolforum@gmail.com ) the info. But, you'll have to be patient; I don't update the firewall more than 1x per week.

Trust goes both ways -- what I always tell people who are concerned, is "read till you trust us, and if you don't trust us don't register". But I routinely block registrations which go out of their way to be anonymous. Given the problems I've had in the past, there's ZERO chance that that will change.