kmlong
Aquarium Advice Activist
just have some questions. what is the big oil slick on the top of my water? Got my tank about 2 months ago, cycled it, have 9 fish in there, all doing fine and healthy. ammonia is at .5 though, fish have only been in a little over a week. I did not add them all at the same time, 3-4 a week. i guess the tank is still setting up cause the ammonia is still present. the end of the month will be the first water change. do i add the water right to the tank and then dechlorinate it or dechlorinate water in some buckets and then add? also, im hearing a lot of people saying not to even put carbon in the filter. I currently have carbon in right now, came with filters. that wouldn't be making the oil slick would it? is it bad to rinse your filter out under tap water. I try to get the most use from them till i replace. anyones help would be appreciated