I have 2ft by 2ft by 2ft and only want coldwater, what do I need?
NEED?
filter, water conditioner, gravel siphon, food, test kit for ammonia, nitrite, and nitrate (and of course knowledge, through research, of the type of fish you're getting and the nitrogen cycle)
other things you should have ...
substrate (gravel or sand)
net
thermometer (coldwater fish still have temp requirements)
decor/plants
light/hood
don't forget to cycle your aquarium:
http://www.ehow.com/how_5474137_do-fishl ...
You might also want to stock up on a heater just in case. Also get a thermometer. Just for precaution on very cold days you may use your heater to avoid the tank getting "too cold"
a filter, airstone, some pebbles, ornaments, fake or live plants, fish, fish food, water conditioner.
and also a good amount of outlets:)