Black skimmers usally live near the water where thy can catch fish.
No but they are in trouble
In Nevada
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.
Oil skimmers, which are pieces of equipment that allow the operator to remove oil and other products from the surface of a liquid, are mostly used as a way to clean lakes and rivers from oil products.