An apparatus, comprising: a body (101, 201, 1001) comprising: a first fluid coupling; and a first air passage (229, 231); a first tank (105, 305) comprising: a first vessel configured to accommodate a fluid; and a second fluid coupling communicatively coupled with the first fluid coupling; a second tank (107, 407) comprising: a second vessel separated from the first vessel; and a second air passage (411, 413) communicatively coupled with the first air passage (229, 231); and a tank base (103, 503) over the body (101, 201, 1001), the tank base (103, 503) comprising: a first tank seat configured to accommodate the first tank (105, 305); a second tank seat configured to accommodate the second tank (107, 407); a first locking mechanism configured to secure the first tank (105, 305) in the first tank seat; a second locking mechanism configured to secure the second tank (107, 407) in the second tank seat; a first button to release the first locking mechanism; and a second button to release the second locking mechanism, wherein the tank base (103, 503) is configured to be separated from the body (101, 201, 1001) with at least one of the first tank (105, 305) in the first tank seat or the second tank (107, 407) in the second tank seat, and the tank base (103, 503) is configured to be removably attached to the body (101, 201, 1001) with the first tank (105, 305) secured in the first tank seat, the second tank (107, 407) secured in the second tank seat, the first tank (105, 305) secured in the first tank seat and the second tank (107, 407) secured in the second tank seat, or free from having either of the first tank (105, 305) secured in the first tank seat or the second tank (107, 407) secured in the second tank seat. a body (101, 201, 1001) comprising: a first fluid coupling; and a first air passage (229, 231); a first fluid coupling; and a first air passage (229, 231); a first tank (105, 305) comprising: a first vessel configured to accommodate a fluid; and a second fluid coupling communicatively coupled with the first fluid coupling; a first vessel configured to accommodate a fluid; and a second fluid coupling communicatively coupled with the first fluid coupling; a second tank (107, 407) comprising: a second vessel separated from the first vessel; and a second air passage (411, 413) communicatively coupled with the first air passage (229, 231); and a second vessel separated from the first vessel; and a second air passage (411, 413) communicatively coupled with the first air passage (229, 231); and a tank base (103, 503) over the body (101, 201, 1001), the tank base (103, 503) comprising: a first tank seat configured to accommodate the first tank (105, 305); a second tank seat configured to accommodate the second tank (107, 407); a first locking mechanism configured to secure the first tank (105, 305) in the first tank seat; a second locking mechanism configured to secure the second tank (107, 407) in the second tank seat; a first button to release the first locking mechanism; and a second button to release the second locking mechanism, wherein the tank base (103, 503) is configured to be separated from the body (101, 201, 1001) with at least one of the first tank (105, 305) in the first tank seat or the second tank (107, 407) in the second tank seat, and the tank base (103, 503) is configured to be removably attached to the body (101, 201, 1001) with the first tank (105, 305) secured in the first tank seat, the second tank (107, 407) secured in the second tank seat, the first tank (105, 305) secured in the first tank seat and the second tank (107, 407) secured in the second tank seat, or free from having either of the first tank (105, 305) secured in the first tank seat or the second tank (107, 407) secured in the second tank seat. a first tank seat configured to accommodate the first tank (105, 305); a second tank seat configured to accommodate the second tank (107, 407); a first locking mechanism configured to secure the first tank (105, 305) in the first tank seat; a second locking mechanism configured to secure the second tank (107, 407) in the second tank seat; a first button to release the first locking mechanism; and a second button to release the second locking mechanism, wherein the tank base (103, 503) is configured to be separated from the body (101, 201, 1001) with at least one of the first tank (105, 305) in the first tank seat or the second tank (107, 407) in the second tank seat, and the tank base (103, 503) is configured to be removably attached to the body (101, 201, 1001) with the first tank (105, 305) secured in the first tank seat, the second tank (107, 407) secured in the second tank seat, the first tank (105, 305) secured in the first tank seat and the second tank (107, 407) secured in the second tank seat, or free from having either of the first tank (105, 305) secured in the first tank seat or the second tank (107, 407) secured in the second tank seat.