[Glofish acting like crazy]

thanks! 

can I do the baths in the same. water with epsom salt diluted? or do I have to replace and make the solution every bath? 

[Glofish acting like crazy]

my glofish tetra has been acting weird in the past few days (swimming upside down, in circles, being hyperactive, eating food upside down, spinning, tumbling against the plants). I have 4 Glofish in a 20 gallon tank I recently upgraded a month ago. I have had these same fish for the past 2 years with no issues at all until now

 water measures levels all parameters are normal except for the PH little low for the species recommendation and all the other 3 fish are normal . all of them are eating well (including the weird one)

 

please advice . your help is greatly appreciated