Lucky page 7 for me.
you used warm tap water bro?you will not keep a nice reef tank that way.the chlorine in the tap water most likly killed all youre good bacteria and started a cycle all over.never,never,never,never,use warm untreated tap water again.you need to mix the salt for day in the water you can burn all youre corals with that salt.if nothing happened to youre tank you dodged a bullet.
Yes I used warm tap water. It was probably around 85 F but that was by touch to be honest.
I do see your concern and it does bring up a really good question:
At what concentration does chlorine kill bacteria in water?
I had a guess but off the top of my head I was not sure so I looked it up and it is 1.0 mg/L at a pH of 7.5 and typically the level in drinking water is 0.2 - 1.0 mg/L.
I added about 1/8 tank volume back so it would be below that threshold.
I could see issue if I had done a 100% change but at this amount I don't think that it killed the bacteria because the tank is not cloudy and there are no baterial mats on the rock indicating a die off that could crash the tank.
If one of my frags had not been exposed to the air I probably would have waited until morning to add water to allow the chlorine to degas.
Also when I do a WC it usually takes me a day or two to get to do it but there have been several threads focusing on how people mix their salt water.
Most do the mix and wait approach while others mix until the salt dissolves, the water is clear and then they dump it right then and there.
As far as a nice tank for the first time in a long time I like my tank, I enjoy it, I don't worry about it, and I actually sit down and look at it beyond cleaning it unlike I have done in the past. To me that is a nice tank. Perhaps one day I will make a 180 and go back to the stress of a tank.
Again thank you for taking the time to post. I hope you stick around the zoa forum and provide your experiences so that we can all learn something about what we all love.
:beer: