As some of you know, I've recently build an automatic water change system involving a 500 cubic inch activated carbon chamber. I tested it and it showed no remaining chlorine (according to my test strips). It's been running for the past week for five minutes every six hours (I will try to calculate the actual water volume later this evening).
Now I'm testing the water to ensure that it continues sufficiently filtering chlorine and it seems to be showing .5ppm free chlorine. This brings me to the question of how much chlorine is damaging/lethal to fish.
If it's changing out 10 gallons of water at .5ppm, I'm guessing that means the tank ends up containing approximately .025ppm overall. This is an extremely rough guestimate as this would be assuming that the new water completely mixes.
Thoughts?
Now I'm testing the water to ensure that it continues sufficiently filtering chlorine and it seems to be showing .5ppm free chlorine. This brings me to the question of how much chlorine is damaging/lethal to fish.
If it's changing out 10 gallons of water at .5ppm, I'm guessing that means the tank ends up containing approximately .025ppm overall. This is an extremely rough guestimate as this would be assuming that the new water completely mixes.
Thoughts?