Black skimmers usally live near the water where thy can catch fish.
In Nevada
Black skimmers are not currently classified as endangered. However, they are considered a species of "Least Concern" on the IUCN Red List. Their populations may be threatened by habitat loss, disturbance, and pollution in some areas.
Skimmers are Silver Bream, not to be confused with Bronze Bream.
Is the skimmer plastic? Does it have a black bottom? If so, there is a kit for this. Check out black bottom skimmer repair - search.
Try another method of killing them.
No
by doing skimmers
The function of skimmers is to remove small pieces of food and batter that have already cooked so they do not contaminate the oil.
I just had change my sand filter and it seem working fine, but it doesn't have enough suction at the skimmers, why it does this?
fish, sea weed
None. Skimmers are mechanical devices, which use the surface tension of the oil to pull oil into a boat.
Skimmers are devices used to remove oil from the surface of water. They work by either utilizing absorbent materials to soak up the oil or by using mechanical means to physically separate the oil from the water. Skimmers can be deployed in oil spill cleanup operations to recover oil and minimize its impact on the environment.