Messed up water?

[Bo Sox Fan]

Good Afternoon-
I have a 20 gallon freshwater tank which has 4 endlers livebearers, 3 gold barbs and a blue gourami in it, all of which I have purchased at your store. All the fish appeared healthy up until this morning. Water tests showed that the pH was high and I put in some pH Down and changed about 1/4 of the water. I also checked the ammonia and nitrite levels which were both normal. One of two female endlers died shortly afterwards and the other fish seem to be swimming in strange pattern. For example the gold barbs are huddled up in the extreme upper back corner of the tank and the endlers are huddled on the bottom. Do you have any ideas as to what this could be? Thanks for your help!

 

[lordmoose]

Urm what do you mean "your store"? This is a fish forum

Have you tested your nitrates as well? Please post paramaters.

 

[Bo Sox Fan]

yeah, sorry about the "store" thing, i pasted this from an email that i sent to the store which is why i tried to stop the post and post it again w/out the store thing. The pH was at least 7.8, the ammonia and nitrates were 0.