Random death

[Pwat]

How can i lower some of the pH in the 20 gallon? any medication or just lots of water changes? and how can i work with my 10 gallon. It seems that the last of the cories is dying now as i type this. He isn't moving and breathing quite quick for a cory.

[Dano]

Why do you want to lower the ph?.......Start doing 10 to 15% water changes every day for several days with the Cory tank....Be sure to use ample water conditioner.....Go back to day one and rethink every thing you have done to the tank....Look hard for anything that would be affecting the fish......(Temp, ammonia, salt, feeding, ect)

[Pwat]

The last of the older cories died today, leaving me with the 2 new ones i bought. I think they might've been carrying a disease and were immune to it, but the older ones weren't. I mean that's possible right? It happened with humans so why not fish. The 2 other cories are happy as ever, so i dont think i'll bother with changing their cory schooling size. I guess these deaths will always be a mystery.

Maybe it's the heat? I have it at 80 F (my heater isn't very good). Do you think if i lowered it, they would've stopped dying?

[Dano]

It is a fact that Corys don't do well in heat!!

[Pwat]

OMG!!! HOW DID I NOT CATCH THAT!!! Thank you Dano!!!! I'll go lower it right now!!!! How could i be so stupid!!!!