Anyone know owt aout keeping Koi Carp?

[bodhi]

Morning folks,

I am looking after me dad's Koi Carp while he's on holiday, feeding them, making sure the pond is ok etc. Anyway I came downstairs this morning to find one of the pumps has jettisoned it's filter material all over the top of the pond. Unfortunately I couldn't do much about it as I had to get out for work, but now I'm here I'm having a full on stress. The pond is now covered in little plastic cog type thingys (calders I believe they're called) and the fish keep popping their noses up through to find food. I dropped a little in in the section that isn't covered in plastic.

So basically my question is, will they be all right? They're me dad's pride and joy, and don't particularly want him to come home find them all swimming belly up.

[bodhi]

Thanks to those who have offered help so far. Luckily me dad should be back later on this afternoon so can look into it, pretty sure he has water testing kits, if not he's very friendly with where he got them from (Stapely Water Gardens in Staffs I believe) so I'd expect they'd help.

I will try and get back at lunchtime to check on them. Take the fish should be OK til then?