Hi Steve and welcome!
I take it that you won't be fishless cycling your tank if you are going to be adding fish in a couple of weeks time?
That being the case, I would strongly recommend you try to get some mature filter media from someone to kick start your filter and thereby speed up the whole process with less chance of fish deaths - there are some members on here who may be in your area and able to donate some mature filter media, or perhaps you could ask at your LFS. Try posting a request on the forums, though.
I would also advise not to add too many fish in one go. Just a few at a time with a week or two gap between each new batch of additions to give the filter bacteria a chance to multiply.
You might find it useful to check on here with your fish choices before you purchase them, just in case they end up being incompatible (you can't rely solely on what you are told in the aquatic centres/pet shops).
Whilst you are buying your fish there are a few items that you will also need:
A liquid test kit (to check your aquarium water readings - very important when cycling the tank to ensure ammonia/nitrite levels are kept at zero)
Aquarium water conditioner
Sorry, need to rush off - Im sure others will be able to also offer advice.
Regards, Athena
