My new Bulk Reef Supply 5 stage plus RO/DI arrived today! Yayyy. Anyway, the most convenient place for me to set it up would be in my porch. The porch used to be outdoors, so there is a hose spigot in the room. No one has turned it on in years. I opened it up today and for the first few seconds it spewed black water. I have cleaned the nozzle with acetone and run it for 5 minutes to clean out any remaining gunk. My question is: is this spigot safe to use with my ro/di? I don't want to wear out the filters quicker than necessary.