Help Please

[resolution]

our tank has suddenly started to die - really need advice here. Been keeping fish for a while and tank was OK. Undergravel filter working, regular cleaning and water changes. Now all the fish keep dying. Only thing that seems to be living is our Plec, one Cory and eight black widows. Any ideas?

 

[McMurray]

Hi and welcome. if you have any questions please dont hesitate to place a question inthe correct forum.

Again Welcome

Have you taken water tests, this is realy important. if you have any results post them here

 

[boff]

Hi welcome ,like McMurray said test your water it sounds like your ammonia and nitrite levels are high .I had the same problem when i first set up my tank, and my 10 black widows were the only fish not to suffer .Ive since found out that they are a realy strong fish good, lucK boff.