I selected other, I have my skimmer cup drain hose hooked up. I drain it into a small container with the optical sensor hooked up so if the container gets full it shuts down the skimmer. I empty that container into a 5 gallon bucket. Now, removing the lid to the 5 gallon bucket half full of month old skimmate.... Now that reeks. I actually think I see the water boiling / moving.... I assume from bacterial activity. I don't honestly know and don't want to know! I've got 10 gallons of skimmate I was thinking of dumping on the lawn or flowers or something outside.. Unsure if the salt will kill them though.