Cal Spas Hot Tubs, Spas and Swim Spas for Sale. Cal Spas C Series Pacifca hot tub on Year Attack. Cal Spas - Yotube Calspas C Series Pacifica hot tub on Yard Attack , Hot Tubs, Spas. Cal Spas was featured on the "Hot Days and Cold Nights" episode of Yard Attack, which aired on July 1, 2011. This episode featured a Cal Spas C Series Pacifica hot tub as a key component of this backyard makeover. Visit us at www.calspas.com.