I just bought the hagen testing solution for ammonia (my LFS sells the testing solutions without the kit so people that already bought one kit can just buy the solutions, so I'm curious how it works I added 4 drops to the water like I would if testing for Ph. However the water didn't change colour at all, should I be adding more drops or more water? or both? and how do I tell the testing level? A little help please so my money doesn't go to waste.
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