Altum wrote:
The dead fish thread reminded me of something. I can smell high
nitrites as soon as I walk into a room. That's how I knew the water was
probably fine in the tank with the lost guppy before I even tested it.
I always know when the nitrites appear in a cycling tank, and I know
the smell of a healthy, mature filter. Am I the only one who "tests"
water chemistry by sniffing it?


I quite often sniff my tanks to check that all seems well..any suspicion
and out come the test kits...I find using my nose first is a lot cheaper
than shelling out on the chemicals...

So nope, you are not alone...but maybe the two of us are g

Gill