It takes the hot water faucet twice as long to fill a bathtub as it does to Coldwater Fossett left on together the cold and hot water faucet steak five minutes to fill the tub how long will it take the Coldwater Fossett to fill the tub by itselfWorking together it takes two different size hoses 30 minutes to fill a small swimming pool if it takes 55 minutes for the larger holes to fill the swimming pool by itself how long will it take the smaller holes to fill the pool on its own