Can you use water from a dehumidifier?

[GardenStateGoldfish]

Hey all! I have always heard no, but in a large heavily planted tank can you use dehumidifier water in an aquarium? This is the aquarium coop test strip on it and here is a photo of the aquarium I was gunna dump it into, the tank size is about 3 gallons of water, tank is 270 gallons, the major difference is obviously water hardness, my water hardness is much harder, over 300 ppm 

[Guppysnail]

I have a dehumidifier.  Maybe it’s my air quality it that I smoke but it right quick time due to it sitting it gets very….eewww…. Maybe if you use is quickly but my interior parts grow some yuckiness too.  I’m curious now.