Does the salifert Brand Nitrate kit test positive for nitrates for freshwater?
I have a 32 gallon rubber maid trash can that I fill with RO
water and use to mix my saltwater? This water always tests 0ppm for nitrates?
But my 32 gallon rubber maid trash can that I use for RO
fresh water top offs always tests around 5ppm for Nitrates using the same kit. I have rinsed and rinsed and well you know the drill. Both cans were new never had garbage in them. At any rate that is why I ask the question. Nowhere in the materials on the box does it specifically say for freshwater use so maybe it isn't. I didn't find the web any more helpful on the subject either.
Thanks In Advance.