The skimmer stopped skimming, because the surface "oils" of the water have been disrupted. This can also be accomplished, simply by feeding your tank or putting your hands in the water. It'll start skimming again, in a day or two.
When you say you can't see into the tank, please describe what you mean? Does the water appear "cloudy white?" Or is it maybe a "dark cloudy?" You could have triggered a bacterial bloom. If this is the case, it could continue to "bloom" for awhile. The carbon will help, though the carbon could also be the source of possible "cloudiness" if the carbon wasn't rinsed VERY WELL, prior to using it. If the carbon is in a filter sock, is the filter sock still white, or has it turned black? I've had carbon totally cloud up a tank, many times, due to my not rinsing it well enough.
Probably not necessary, but you could also perform a large water change. 50% won't hurt anything, as long as the new water parameters and temperature are close to the tank water.
When you say you can't see into the tank, please describe what you mean? Does the water appear "cloudy white?" Or is it maybe a "dark cloudy?" You could have triggered a bacterial bloom. If this is the case, it could continue to "bloom" for awhile. The carbon will help, though the carbon could also be the source of possible "cloudiness" if the carbon wasn't rinsed VERY WELL, prior to using it. If the carbon is in a filter sock, is the filter sock still white, or has it turned black? I've had carbon totally cloud up a tank, many times, due to my not rinsing it well enough.
Probably not necessary, but you could also perform a large water change. 50% won't hurt anything, as long as the new water parameters and temperature are close to the tank water.