a ten gallon tank u can usually get a whole 'kit' for 30 or less. comes with a hood with an incadecent light, a hang on filter .. you'll probley need to get a heater seperately.
thing is, if it was id ck, youd need to quarentine your existing fish and leave your main tank fish free for at least 6 weeks to get the ick to die off.
I dident qt my first fish, but any fish you want to add later you DEF want to qt so no new fish get your existing fish sick
if you need to set up a qt tank now, use water from your main tank to fill it, new water wouldent have enough bacterias n stuff