I was thinking about hooking up my dehumidifier to drain into my aero reservoir, but I'm concerned about contaminating the res with metals. The coils look like they're made of copper and aluminum, and the waste water from the dehu measures at 30ppm (for comparison my RO water measures around 23ppm). Looking for thoughts/opinions on whether this could be an issue. If so I'll need to create a secondary tank with a float valve and switch, and buy another pricey diaphragm pump to handle pumping the water to waste (or modify the built in tank.) I'm aware that some of the dehus have built in pumps but opted not to go that route because it adds another component that can brick the dehu if it fails. Also the way that these built in drain pumps attach to tubing looked questionable compared to a garden hose thread which can be adapted.