Hi guys,
I have a sick guppy and I was hoping you could help.
It's a 10 gallon tank 0 Ammonia (or darn close to it, well under 0.25), 0 Nitrite, 20 Nitrates. I use API liquid test.
Three male guppies in tank, which were added about 10 days ago. No other fish.
Tank has been set up for a...