brand new to saltwater

hello everyone im brand neww to saltwater tanks i have a 40 gallon fresh and thought i would try my luck at saltwater i recently went to petco and was looking for a biocube 29 gallons unfortunetly they dont sell the 29 gallon anymore so the lady there showed me a 55 that would work for a saltwater tank (<ACRONYM title="Fish Only With Live Rock">FOWLR</ACRONYM>) and its only 200 dollars and for my fish i was thinking of getting a clown fish either osolaris or the black sattle back and a green chromis. but my ideal fishes (i know grammer is wrong) i would like are a black and orange clown fish 1 green chromis a yellow tank and 1 black and white Heniochus
i would like to get your input on these fish plz also note im NOT DOING CORALS at least not nowalso what would be the best way to mix salt water like mix it strait in the tank or get a garbage can(brand new and clean) to mix it in or what. and all the fish i mentioned you can see at petco.com alsohas anyone ever bought fish off of the internet if they did what website like petco or somethuing else and what were the results good or bad anyway im looking forward to getting email and such from you people and im REALLY looking forward to my salt water.(also view this on my blog)<!-- google_ad_section_end --><!-- google_ad_section_end -->

 

Hello and welcome to 3reef.

 

Hello and welcome.