Poorly Mollies

[Trixibelle]

My mollies are poorly

Lost horrendous amounts of weight and loosing colour

One died a week ago

All water stats are perfect

They did experience high nitrate a few weeks ago when on holiday and a neighbour was looking after them and I think completely over fed them dispite my instructions

Any suggestions?
Have also posted this in emergencies.
Thanks

 

[helterskelter]

Mollies suffer severely from poor water quality, they need hi quality water or salt to be added (Salt just reduces the stress factors).
Have you tested for ammonia or nitrItes?

How long has the tank been set up?
What u keeping along side them?

 

[OldMan47]

I would challenge the idea that water parameters are fine. What is your GH and pH in the tank? A molly requires fairly hard water and a pH that is quite high by usual standards.