OT - help with tropicals!

[Cheryl Isaak]

Hi!

I am babysitting a tank of tropical fish while they are away. 70(?) gallon
tank, mix of fish, fairly new (6 weeks)..... I go over daily to feed and
remove dead fish.

I was warned one looked sick when they left, a gourami which did die and two
guppies died.... Now one of the sharks is looking bruised and battered and
has a large whitish spot on one side and it has tremors.....

Do I go back and remove it before it dies or just wait it out.
Should I expect this level of die off?

I am feeding according to instructions and she did the chemistry the night
before they left. I have to assume there were no problems and that a water
change was done too....

They are gone for another week and are in Europe, so reaching them will be
difficult....
Thanks for your help!
Cheryl

[Geezer From The Freezer]

Cheryl,

Do you have access to water test kits? If so then I'd
check for ammonia and nitrites first.

Are you 100% sure you're not feeding the fish too much?
Feed them and ensure they eat the lot in under 5 minutes.

Don't let any food float after this period (or drop the the bottom)