I have a DOS setup for automatic water changes that sends the old salt water to a 10 gallon reservoir in a closet behind the aquarium. I have a optical sensor to stop the water changes when it's full. Interestingly the closet shares a wall with a bathroom. I would like to have the old salt water empty in to the drain below the sink in the bathroom. Has anyone done this before and have recommendations on fittings for the PVC and DOS tubing? I did some searching on this and I could not find a definitive answer. Thanks in advance for your help.
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