0.25-0.5 is a pretty small amount. I bet it was over 5 when you first started. I would expect that you are very close to having it beat! I would watch your additions a lot closer now. With the amount you have been adding, you could easily overshoot pretty bad once it decides to hold. It seems that it is already beginning to hold as your FC is not dropping to 0 right away.
Good job at not giving up! I know its hard to be dumping in 30 gallons of bleach and not seeing any results!
Good job at not giving up! I know its hard to be dumping in 30 gallons of bleach and not seeing any results!