Ohh nooo!

[SunnyHouTX]

Nitrate toxicity perhaps?

[Geral]

I would test ammonia and nitrate

For me 20% every 6 Weeks is too little , specially with catfish and large plecos

[CRW]

When was your last water change?

I add/change 20% about every 6weeks.

[Geral]

When was your last water change?

[CRW]

What kind of fish? What size tank? Are your heater and filtration still going?

I'm so sorry to hear this. :( We'll try to figure out what happened.

55 gallon tank, Aqueon Quiet flow for 75 gal tank, electric heater that was in working order. The aquarium residents were 3 large Featherfin cats, 1 large Pleco, 3 large Angelfish, a Brasscat and an Upside down cat.The aquarium was healthy and I had these fish for a long time (2yrs). No new introductions. Filter was due a change this weekend. Thanx Calvin

[SunnyHouTX]

What kind of fish? What size tank? Are your heater and filtration still going?

I'm so sorry to hear this. :( We'll try to figure out what happened.

Any info? Kind of hard to give input with no information other than the tank seemed normal. How long has your tank been set up? Water parameters? Livestock list? Tank size? Filtration? Substrate?

+1

[mistahoo]

Any info? Kind of hard to give input with no information other than the tank seemed normal. How long has your tank been set up? Water parameters? Livestock list? Tank size? Filtration? Substrate?

[aquabee]

What kind of fish? What size tank? Are your heater and filtration still going?

I'm so sorry to hear this. :( We'll try to figure out what happened.

[CRW]

This morning I was welcomed by dead fish, ALL of them. I have no idea what happened. My fish were healthy, they ate good, active, all the things we like in our fish, they were. Everything in the tank seemed normal last night. What happened? Any input is appreciated.