I just moved into a brand new house (new construction). I had ordered a new fridge, which just arrived. I'll mention there is a simple Culligan water filter installed under the sink, along with a goose neck faucet for drinking water. I see blue hose running from the Culligan system. In the spot where the refrigerator goes, there is a blue hose coming out of the floor (is this from the Culligan filter?), but there is also a water spout there in the wall. Which do I use for my refrigerator - one or both? My refrigerator has a water purification system built in for the water and ice dispensers. If that blue hose is coming from the Culligan purifier, would I still want to use that hose and essentially "doubly purify" the water/ice in the refrigerator. I would appreciate any help. Thanks.