Dithering Now : (

Do you mean should you change water before or after you add your fish? I mean, do you intend to get your fish before Tuesday? If so, I would always say before. To quote the Think Fish articles again:

"Maintenance such as water changes, gravel cleans, and filter cleans, are essential parts of good aquarium care, but they are also disruptive to the aquarium environment. New fish need time to settle with as little disruption as possible so it is best to introduce new fish a few days after maintenance and a week before any further maintenance."

Good advice, as usual.

I'd do the change today, then no more for a week, so that the fish get the chance to settle in without disturbance. After all, if you test for nitrate tomorrow and find it high, you would have to change the water before getting the fish while I reckon giving the water a day to settle down first before adding fish is better.

Which fish do you plan to get tomorrow?

GOT EM!!!    3 male and 3 female Congo Tetras, might be a bit of a baptism of fire for them as i haven't quite got my temperature stable yet, so annoyed i had it all set last night at 24c then for some reason decided shop would have em at 25c so upped it, turns out they have em at 24 so now iv'e turned it down again but not sure where it's going to land  *blink* All seem ok but there's always one isn't there, one female is staying very still hiding on her own, hope it's just nerves and nothing else, ah well watch this space (it will include pics if they all survive the next week)   

Thanks Richard, just that nervous, will they won't they stage for a few days now lol 

Hi Fishcake, hope you have a great new year by the way  yes give em time and maybe they will be like my platy and minnow boys, they know the "feed time" voice and tap on tank lol they come a swimming lol.