Hi,

Sorry for the double post; my phone hates me today!!!




I'm sorry I don't know the answer myself, so am really hoping someone else can shed some light...

My 50l tank has been running and stokced for over two years- I've lost fish before (even cried a few times) and lost one to bad ph, two to whitespot, and a few unknown (all ages ago though). But oh I hate unknown!
On Friday I lost the 1st fish I ever bought- a male swordtail, I'm assuming one of his females attacked him; so sat I did a mini water change, but I would assume it is not relevant as temp, ph etc is all normal,...
Now another one of my fish is dying. A little male guppy was having buoyancy issues last night, and is now swimming upside down at the top of the tank.
Will I just need to let him pass or is there something I can do/give him? I can be at the pet shop by lunchtime if there is a treatment I can give him!
If you have Any ideas please let me know- he is such a pretty thing and I don't want to see him die or suffer!