Whats Going On?!

[JRS21386]

I dont know whats going on but one of my mollies died last night unexpectedly, i watch the fish very closely everyday and i couldnt see anything wrong with him... Just 3 or 4 days before that one of my little flounder died as well of a cause unknown to me... i dont know whats going on... my aquarium temperature however has fallen about 6-8 degrees in the past couple of days but thats all i can think of...can anyone help me?

 

[Guppygal]

A 6-8 degree temperature change is pretty significant and the fish could have got a chill (if your tank is norm at 76, to plunge to 68 is too much ) Also make sure to check your nitrites because they can suddenly peak and cause illness and death.

Based just on the little info you gave however it is hard to make a call on this one.

Do a 5-way (nitrates, nitrites, PH, hardness, alkalinity) stick reading and list the results. This would be a big help I think...