You guys all lost me, but I'm fairly sure the PH of the water can also correlate with the Nitrate, Nitrite, and ammonia. Especially seeing that ammonia is a base, or "alkaline" and seeing since nitrite can increase the PH of a water, I use simple water PH tests to keep it in a ball park range, and ...

Also it's not like my water is chemically treated, in the area I live in, I am so fortunate enough to have my own water well.

Sorry for your loss.

I notice how you avoid stating what the pH was/is and any other water parameters. To us, it means you don't know them.

If one is serious about providing the best conditions for their pet fishes, it is highly advisable to keep track of at least 5 water parameters: temp, pH ...

Also. how does one humanely euthanize a fish? it's going to be depressing either way.
Jungle Laboratories makes a tablet loaded with Clove Oil which first anesthetizes then "humanely" suffocates the fish.
Personally, I either slam a suffering fish as hard as I can on a concrete floor or smash ...

Also. how does one humanely euthanize a fish? it's going to be depressing either way.

Hey, thanks for getting back to me so soon.
Well here's my routine.

2 55 gallons.

I do weekly to bi-weekly water changes (1/4 to 1/2)
I check the PH once a month
1 55 has 1 60-80 Gal. rated filter
1 acrylic 55 has 2 40 gal filters (all power filters)
I add the properly measured freshwater salt ...

So I have this Rhamdia I purchased about 6 months ago. Recently, he has been appearing sick (not eating, being lethargic) and when my catfish was in it's comatose state, my pleco took to nibbling his scale-less brown coloring off, then it was infected, and my Oscar too noticed and began to nibble at ...