I have a garden tub with a Delta faucet on it. I'd like to add a spray hose for washing the dog and stuff but not sure the best way to do this. I would add plumbing to the wall and put one there but it's really hard to get to the back side of that wall. Also, it's hard to get under the tub because it's a slab. The faucet is delta, do they make a connection or some adapter where I could just add a spray hose assembly to this fitting?